What the Bible Says About Strength: Key Passages Explained
Culture prizes strength that is self-sufficient, visible, and earned. The Bible describes something almost entirely different, a strength that comes from outside yourself, that is perfected in weakness, and that belongs first to God.
The Hebrew and Greek words behind "strength" in Scripture carry a range of meaning, power, might, force, courage, ability, but they share a common thread: genuine strength is rooted in who God is, not in human capacity. The passages below trace that theme from Isaiah to Paul, and each one challenges the assumption that strength is something you generate on your own.
Isaiah 40:31, Strength renewed by waiting
"But those who wait for Yahweh will renew their strength. They will mount up with wings like eagles. They will run, and not be weary. They will walk, and not faint."
Isaiah 40:31 (WEB)
The Hebrew verb translated "hope" or "wait" here is qavah, to wait expectantly, to bind together, like strands twisting into a cord. It is not passive resignation but active, directed trust. The promise is to those who do this: their strength will be renewed, literally "exchanged", the old depleted strength replaced with something new.
The imagery builds in reverse order: flying, then running, then walking. Walking without fainting is harder in some ways than short bursts of high intensity. The passage addresses long-haul exhaustion, the kind that accumulates over years of difficulty. Isaiah 40 opens with "comfort my people" and ends here, because the deepest comfort is not the removal of hard circumstances but the renewal of the strength to endure them.
Read the full chapter: Isaiah 40.
Philippians 4:13, Strength through Christ
"I can do all things through Christ, who strengthens me."
Philippians 4:13 (WEB)
This verse is one of the most quoted in the Bible, and one of the most misread. The "all this" does not refer to any goal or achievement. The context is contentment in every circumstance: Paul has learned to be content whether well-fed or hungry, whether living in plenty or in want (v. 12). The strength Christ provides is the strength to be content in suffering, not a guarantee of success in any endeavor.
The Greek verb endunamoō, "gives me strength", is used elsewhere in Paul's letters for the strengthening that comes through union with Christ (Ephesians 6:10, 2 Timothy 4:17). It is not motivational power in a general sense. It is the ongoing enabling that comes from being in Christ, strength poured into a person from outside, not generated from within.
Read: Philippians 4.
2 Corinthians 12:10, Strength made perfect in weakness
"Therefore I take pleasure in weaknesses, in injuries, in necessities, in persecutions, in distresses, for Christ’s sake. For when I am weak, then am I strong."
2 Corinthians 12:10 (WEB)
This is perhaps the most counterintuitive statement in the New Testament. Paul reaches it after describing a "thorn in the flesh" he begged God three times to remove. God's answer was not removal but a promise: "My grace is sufficient for you, for my power is made perfect in weakness" (v. 9).
The Greek word for "made perfect" is teleoō, to complete, to bring to its goal or end. God's power reaches its full display not in demonstrations of human strength but in the contrast with human weakness. Paul's conclusion is not resignation, he says he "delights" in weakness. The reason is specific: when his own capacity runs out, Christ's power is unobstructed. Weakness is not an obstacle to strength; it's the condition in which God's strength is most clearly seen.
Read: 2 Corinthians 12.
Psalm 46:1, God as strength in trouble
"God is our refuge and strength, a very present help in trouble."
Psalm 46:1 (WEB)
The Hebrew word translated "strength" here is ʿoz, a word for power, might, and fortified security. God is not just a source of strength; he is described as strength itself, and as "a very present help," literally "found abundantly" or "well-proven" in trouble. This is not a theoretical claim. The psalm continues with images of total catastrophe: mountains falling into the sea, nations in uproar, kingdoms collapsing. God's presence remains unmoved through all of it.
The refrain of the psalm, "The Lord Almighty is with us; the God of Jacob is our fortress" (vv. 7, 11), ties strength directly to presence. It is not an ability God imparts from a distance. His being with his people is the strength. Psalm 46 is the historical background to Martin Luther's "A Mighty Fortress Is Our God," written during a period of intense personal and political crisis, drawing on exactly this claim.
Read: Psalm 46.
Ephesians 6:10, Strength for spiritual warfare
"Finally, be strong in the Lord, and in the strength of his might."
Ephesians 6:10 (WEB)
The command is striking: "be strong in the Lord", not be strong, full stop. The preposition matters. Paul's imperative is not self-improvement or willpower. It is strength located in another. The Greek word endunamoō appears again here, the same term as in Philippians 4:13, meaning to be empowered, to receive strength from outside oneself.
Ephesians 6:10 opens the famous "armor of God" passage (vv. 10–18), which describes a struggle "not against flesh and blood, but against the rulers, against the authorities, against the powers of this dark world." The armor that follows, truth, righteousness, the gospel of peace, faith, salvation, the word of God, is not self-generated virtue. Each piece describes something already given, something received and worn rather than manufactured. The strength Paul calls Christians to is the strength of someone who has been equipped, not someone who has built up their own resources.
Read: Ephesians 6.
What these passages have in common
- ✦Strength comes from God, not from the self. Whether Isaiah's renewal, Paul's enabling in Christ, or the armor of Ephesians 6, biblical strength is always received, not generated.
- ✦Weakness is not the enemy of strength. 2 Corinthians 12 makes explicit what the other passages imply: human weakness is the condition in which God's power is most fully displayed.
- ✦Strength is relational, not mechanical. It flows from God's presence (Psalm 46), union with Christ (Philippians 4:13), and waiting on the Lord (Isaiah 40:31), not from techniques or discipline alone.
- ✦It is for endurance, not just exertion. The Bible's vision of strength is less about peak performance and more about walking without fainting, sustained faithfulness through years of difficulty.
Ask the Bible AI about strength
Struggling with exhaustion, weakness, or what real strength looks like? Ask ScriptureDepth to explore what the Bible says.
Ask about strength →Topic study
Key Bible Verses on Strength
“I can do all things through Christ, who strengthens me.”
This verse highlights the empowering strength that comes from faith in Christ. It reassures believers that regardless of their challenges, they can find capability and resilience through their relationship with the Lord.
“But those who wait for Yahweh will renew their strength. They will mount up with wings like eagles. They will run, and not be weary. They will walk, and not faint.”
This verse emphasizes the importance of patience and trust in God. It assures believers that those who rely on the Lord will experience a renewal of strength that allows them to overcome obstacles.
“He has said to me, “My grace is sufficient for you, for my power is made perfect in weakness.” Most gladly therefore I will rather glory in my weaknesses, that the power of Christ may rest on me.”
Here, Paul shares God's message about finding strength in weakness. This highlights that God's power shines brightest when we are vulnerable, allowing His grace to lift us in our hardest times.
“God is our refuge and strength, a very present help in trouble.”
This verse reassures believers that God is a constant source of strength and support during difficult times. It serves as a reminder that we can turn to Him for security and help when we feel overwhelmed.
“Then he said to them, “Go your way. Eat the fat, drink the sweet, and send portions to him for whom nothing is prepared, for today is holy to our Lord. Don’t be grieved, for the joy of Yahweh is your strength.”
In this verse, it is emphasized that joy derived from the Lord provides strength. It teaches that emotional and spiritual strength can be found in celebrating God's presence and promises.
“Finally, be strong in the Lord, and in the strength of his might.”
This verse encourages believers to draw on God's immense power instead of relying on their own. It emphasizes the necessity of spiritual strength derived from a relationship with God to face the challenges of life.
“the God who arms me with strength, and makes my way perfect?”
This verse acknowledges God's role in providing strength and guidance. It reflects the belief that God not only strengthens us but also prepares our paths to walk in righteousness.
“Now the God of perseverance and of encouragement grant you to be of the same mind one with another according to Christ Jesus,”
This verse illustrates that strength is not only for individual struggles but also for community and unity among believers. It emphasizes the importance of encouragement and support from God and each other.
More verses about Strength (WEB)+
30 further passages this study and its cross-references point to, in the World English Bible. Each one opens its chapter.
- 2 Timothy 4:17“But the Lord stood by me, and strengthened me, that through me the message might be fully proclaimed, and that all the Gentiles might hear; and I was delivered out of the mouth of the lion.”
- Hebrews 4:16“Let us therefore draw near with boldness to the throne of grace, that we may receive mercy, and may find grace for help in time of need.”
- Matthew 6:33“But seek first God’s Kingdom, and his righteousness; and all these things will be given to you as well.”
- Romans 14:13“Therefore let’s not judge one another any more, but judge this rather, that no man put a stumbling block in his brother’s way, or an occasion for falling.”
- Romans 1:16“For I am not ashamed of the Good News of Christ, because it is the power of God for salvation for everyone who believes; for the Jew first, and also for the Greek.”
- Isaiah 41:10“Don’t you be afraid, for I am with you. Don’t be dismayed, for I am your God. I will strengthen you. Yes, I will help you. Yes, I will uphold you with the right hand of my righteousness.”
- Ephesians 3:20“Now to him who is able to do exceedingly abundantly above all that we ask or think, according to the power that works in us,”
- 1 Corinthians 10:13“No temptation has taken you except what is common to man. God is faithful, who will not allow you to be tempted above what you are able, but will with the temptation also make the way of escape, that you may be able to endure it.”
- Romans 8:1“There is therefore now no condemnation to those who are in Christ Jesus, who don’t walk according to the flesh, but according to the Spirit.”
- Romans 12:2“Don’t be conformed to this world, but be transformed by the renewing of your mind, so that you may prove what is the good, well-pleasing, and perfect will of God.”
- Psalm 62:6“He alone is my rock and my salvation, my fortress. I will not be shaken.”
- 2 Corinthians 10:4“for the weapons of our warfare are not of the flesh, but mighty before God to the throwing down of strongholds,”
- 1 Timothy 6:6-7“But godliness with contentment is great gain. For we brought nothing into the world, and we certainly can’t carry anything out.”
- Psalm 91:1“He who dwells in the secret place of the Most High will rest in the shadow of the Almighty.”
- Deuteronomy 32:3-4“For I will proclaim Yahweh’s name. Ascribe greatness to our God! The Rock, his work is perfect, for all his ways are just. A God of faithfulness who does no wrong, just and right is he.”
- Ecclesiastes 9:10“Whatever your hand finds to do, do it with your might; for there is no work, nor plan, nor knowledge, nor wisdom, in Sheol, where you are going.”
- Isaiah 12:3“Therefore with joy you will draw water out of the wells of salvation.”
- 1 Thessalonians 5:5“You are all children of light, and children of the day. We don’t belong to the night, nor to darkness,”
- 1 Corinthians 16:13“Watch! Stand firm in the faith! Be courageous! Be strong!”
- Psalm 27:1“Yahweh is my light and my salvation. Whom shall I fear? Yahweh is the strength of my life. Of whom shall I be afraid?”
- 2 Corinthians 4:6“seeing it is God who said, “Light will shine out of darkness,” who has shone in our hearts, to give the light of the knowledge of the glory of God in the face of Jesus Christ.”
- Galatians 6:2“Bear one another’s burdens, and so fulfill the law of Christ.”
- 2 Timothy 3:16“Every Scripture is God-breathed and profitable for teaching, for reproof, for correction, and for instruction in righteousness,”
- Hebrews 12:2“looking to Jesus, the author and perfecter of faith, who for the joy that was set before him endured the cross, despising its shame, and has sat down at the right hand of the throne of God.”
- Joshua 1:9“Haven’t I commanded you? Be strong and courageous. Don’t be afraid. Don’t be dismayed, for Yahweh your God is with you wherever you go.””
- 2 Timothy 1:7“For God didn’t give us a spirit of fear, but of power, love, and self-control.”
- Isaiah 2:4“He will judge between the nations, and will decide concerning many peoples; and they shall beat their swords into plowshares, and their spears into pruning hooks. Nation shall not lift up sword against nation, neither shall they learn war any more.”
- Psalm 9:9“Yahweh will also be a high tower for the oppressed; a high tower in times of trouble.”
- Acts 20:24“But these things don’t count; nor do I hold my life dear to myself, so that I may finish my race with joy, and the ministry which I received from the Lord Jesus, to fully testify to the Good News of the grace of God.”
- 1 Timothy 1:15“The saying is faithful and worthy of all acceptance, that Christ Jesus came into the world to save sinners; of whom I am chief.”
Common Questions About Strength
What does "I can do all things through Christ" actually mean?+
Philippians 4:13, where Paul talks about doing all things through Christ who strengthens him, is about finding contentment rather than achieving personal goals. In the preceding verses, Paul describes learning to face both abundance and need. The promise is not that Christ will fulfill every ambition, but that he will provide strength to endure and remain faithful in any situation. This assurance is more about resilience than success.
How do I find strength when I'm exhausted?+
Isaiah 40:31 assures us that those who wait for the Lord will have their strength renewed, like soaring on eagle's wings, running without growing weary. This strength comes from a place of reliance on God rather than sheer willpower. Psalm 46:1 reinforces this by describing God as our refuge and strength, always present to help in times of trouble.
What does the Bible say about strength in weakness?+
The Bible teaches that God's strength is most evident in our weakness. In 2 Corinthians 12:9, God tells Paul that His grace is sufficient and His power is perfected in weakness, leading Paul to embrace his weaknesses. Psalm 18:32 describes God as the one who equips with strength. Acknowledging our weakness opens the way for God's power to work through us.
Where does spiritual strength come from?+
Spiritual strength comes from the Lord himself and from joy in him. Ephesians 6:10 encourages believers to rely on the Lord's strength rather than their own. Nehemiah 8:10 highlights that joy in the Lord provides strength. Additionally, Romans 15:5 describes God as the source of endurance and encouragement.
Related topics
Study Notes
Ready to go deeper?
Try the AI Bible study companion, ask any question about what you just read. Free to start, no signup required.