Isaiah 40:31
But they that wait upon the Lord shall renew their strength; they shall mount up with wings as eagles; they shall run, and not be weary; and they shall walk, and not faint.
Isaiah 41:10
Fear thou not; for I am with thee: be not dismayed; for I am thy God: I will strengthen thee; yea, I will help thee; yea, I will uphold thee with the right hand of my righteousness.
Joshua 1:9
Have not I commanded thee? Be strong and of a good courage; be not afraid, neither be thou dismayed: for the Lord thy God is with thee whithersoever thou goest.
Philippians 4:13
I can do all things through Christ which strengtheneth me.
2 Corinthians 12:9
And he said unto me, My grace is sufficient for thee: for my strength is made perfect in weakness. Most gladly therefore will I rather glory in my infirmities, that the power of Christ may rest upon me.
Psalm 27:1
The Lord is my light and my salvation; whom shall I fear? the Lord is the strength of my life; of whom shall I be afraid?
Psalm 46:1
God is our refuge and strength, a very present help in trouble.
How the Bible understands strength and courage
Across the Old and New Testaments, strength is almost never portrayed as stoic self-reliance. In historical narratives, prophetic poetry, the Psalms, and Paul's letters, people ask for strength precisely when their own reserves are spent. The recurring promise of Scripture is not that tasks will become easy, but that God goes with his people—renewing those who wait on him and working through ordinary human weakness.
Renewed endurance in the Prophets and Historical Books
When Israel faced long seasons of displacement or major transitions in leadership, courage came from remembering who stood beside them.
Isaiah 40:31 — Renewed strength for those who wait on the Lord
Chapter 40 of Isaiah opens a message of comfort to exiles in Babylon who felt forgotten and worn out after decades of captivity. Even youths grow tired, the prophet observes, yet those who wait upon the Lord exchange their exhaustion for renewed vitality—mounting up with wings as eagles, running without weariness, and walking the long road home without fainting.
Isaiah 41:10 — Fear not, for God is with you
Continuing his address to a vulnerable people surrounded by empires, Isaiah records God's reassurance not to fear or be dismayed. The reason for courage is relational: God promises to strengthen, help, and uphold his servant.
Joshua 1:9 — Courage at the threshold of a new responsibility
After the death of Moses, Joshua had to lead the people across the Jordan into unfamiliar territory. Three times in the opening chapter, Joshua is told to be strong and of good courage. The charge is anchored not in Joshua's military skill, but in the assurance that the Lord is with him wherever he goes. You can see a similar portrait of quiet trust facing overwhelming odds in the story of David and Goliath.
Strength inside weakness in Paul's letters
In the New Testament epistles, strength looks less like outward triumph and more like steady resilience under pressure.
Philippians 4:13 — Contentment in plenty and in need
Often quoted in isolation as a motto for personal achievement, Philippians 4:13 was written by Paul from Roman custody. In the surrounding verses, he describes learning to live with humble means and with abundance alike. The strength Christ gives him is the capacity to remain steady and content in any circumstance. Our lesson on reading the Bible in context examines this passage in detail.
2 Corinthians 12:9 — Grace that is sufficient in human frailty
Writing to Corinthian critics who admired polished, powerful speakers, Paul speaks openly about a painful "thorn in the flesh" that he asked the Lord three times to remove. Instead of taking away the hardship, the Lord answered that his grace is sufficient and that divine strength reaches its fullness in weakness.
Refuge and confidence in the Psalms
Psalm 27:1 — The Lord as light and stronghold
Attributed to David, Psalm 27 opens with a bold confession of trust: because the Lord is the speaker's light, salvation, and the strength of his life, fear loses its grip even when adversaries press close.
Psalm 46:1 — A very present help in trouble
Sung by the temple choirs of Jerusalem, Psalm 46 names God simultaneously as refuge (a shelter to hide in) and strength (active support when trouble arrives). To explore more passages on God's shelter, see our collection of Bible verses for protection.
How to read and reflect on these verses
Notice what kind of strength you need today: the courage to step into a difficult duty (Joshua 1:9), the patience to keep walking when tired (Isaiah 40:31), or the humility to accept help in weakness (2 Corinthians 12:9). Read that verse aloud slowly and ask God for the specific endurance today requires.
Questions people ask
01What does Philippians 4:13 really mean in its original context?
Paul wrote Philippians 4:13 from prison while thanking the church for a gift. Rather than promising athletic or career victory, he explains that Christ gives him the inner strength to be content whether he has plenty or faces hunger and need.
02Which Bible verse helps when you feel physically or emotionally exhausted?
Isaiah 40:31 speaks directly to exhausted exiles, promising that those who wait upon the Lord will renew their strength—not only soaring in dramatic moments, but walking day by day without fainting.
03How does 2 Corinthians 12:9 view human weakness?
In 2 Corinthians 12:9, Paul shares the Lord's answer to his unremoved 'thorn in the flesh': God's grace is sufficient, and divine power is made perfect right inside human frailty rather than apart from it.