"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 40:31)

The order is odd on purpose

Look at the sequence: mount up → run → walk.

Rhetorically it should build. Instead it descends — from flying, to running, to walking.

That is not a flaw. Flight is a rare moment, running is a stretch with a goal in sight, and walking is what most days look like. Putting "walk, and not faint" last puts the hardest thing last: not fainting when there is no summit and no sprint is what actually takes strength.

What "wait" means

The Hebrew verb is qavah, related to twisting strands into a cord, and extended to mean expectant longing.

It is not passive sitting. It is closer to putting your weight onto something and being wound around it. Some translations render it "hope in the LORD" for exactly this reason — the word carries tension.

But they that wait upon the LORD shall renew their strength; they shall mount up with wings as eagles.Isaiah 40:31 (KJV)

What "renew" says

The literal sense is to exchange strength — to trade yours for God's.

The distinction is practical: it is not that your existing supply gets topped up, but that the source changes. The verse before makes exactly this point — "even the youths shall faint and be weary, and the young men shall utterly fall" (40:30). Human capacity at its best still runs out.

Who it was said to

Isaiah 40 opens with "Comfort ye, comfort ye my people." The chapter is addressed to people in exile, discouraged, and convinced God had stopped paying attention.

40:27 quotes their complaint directly: "Why sayest thou, O Jacob… My way is hid from the LORD?"

40:31 is the answer to that complaint, not a free-floating encouragement. Before it sits a long passage (40:12-26) about the scale of God — measuring the waters, weighing the mountains, numbering the stars. God's capacity is established first; human renewal comes second.

How to use it

If you are in a long stretch of depletion, the thing to notice is what it promises: not that you will feel better, but that you will be able to keep going.

And its condition is a verb: wait. Not wait until you have strength and then act, but hand over the weight while you do not have it.

Read all of Isaiah 40 in the BiblePro app — from "comfort ye my people" to the last verse — and the placement of this line becomes clear. And do look for a local church to read alongside others.

Series · Verse ExplainedPart 13 of 37
In this series
  1. 1What Does Joshua 1:9 Mean? Be Strong and of a Good Courage
  2. 2What Does Psalm 23 Mean? A Verse-by-Verse Reading
  3. 3What Does Psalm 90 Mean? Moses Asks for an Arithmetic Lesson
  4. 4What Does Psalm 100 Mean? The Thanksgiving Psalm, Verse by Verse
  5. 5What Does Psalm 103 Mean? Forget Not All His Benefits
  6. 6What Does Psalm 107 Mean? Four Kinds of People, One Formula
  7. 7What Does Psalm 116 Mean? The Answer to What Shall I Render Is Take More
  8. 8What Does Psalm 136 Mean? Why One Line Repeats Twenty-Six Times
  9. 9What Does Proverbs 3:5-6 Mean? Trust and Direction
  10. 10What Does Ecclesiastes 3 Mean? The Poem About Seasons Is Not Consoling You
  11. 11What Does Immanuel Mean? A Name Nobody Ever Actually Called Him
  12. 12What Does Isaiah 9:6 Mean? A Past Tense Written Seven Hundred Years Early
  13. 13What Does Isaiah 40:31 Mean? Waiting, Renewing, Walking
  14. 14What Does Isaiah 43:19 Mean? The Verse Before It Is Reciting the Past
  15. 15What Does Jeremiah 29:11 Mean? Who It Was Written To
  16. 16What Does Lamentations 3:22-23 Mean? It Grows in the Middle of the Bleakest Book
  17. 17What Does Micah 5:2 Mean? The People Who Knew the Address Never Went
  18. 18What Does Matthew 11:28 Mean? Come Unto Me, All Ye That Labour
  19. 19What Does the Magnificat Mean? The Longest Speech by a Woman in the New Testament
  20. 20What Does Luke 2:14 Mean? Why Bibles Word It Differently
  21. 21What Does John 1:1 Mean? In the Beginning Was the Word
  22. 22What Does John 1:14 Mean? Dwelt Among Us Is Literally Pitched a Tent
  23. 23What Does John 3:16 Mean? Line by Line
  24. 24What Does Romans 8:28 Mean? What It Says and What It Does Not
  25. 25What Does 1 Corinthians 13 Mean? The Wedding Passage in Context
  26. 26What Does 2 Corinthians 5:17 Mean? The Greek Has No Verb
  27. 27What Does 2 Corinthians 9:15 Mean? A Word Used Once in the Whole New Testament
  28. 28What Does 2 Corinthians 12:9 Mean? My Grace Is Sufficient for Thee
  29. 29What Does Galatians 2:20 Mean? I Am Crucified With Christ
  30. 30What Does Galatians 4:4 Mean? Paul's Only Mention of Jesus Being Born
  31. 31What Does Philippians 4:13 Mean? The Verse in Context
  32. 32What Does Colossians 3:15 Mean? Let the Peace of Christ Rule
  33. 33What Does 1 Thessalonians 5:18 Mean? Give Thanks in Everything
  34. 34What Does Hebrews 1:1 Mean? Five Words in a Row Start With the Same Letter
  35. 35What Does Hebrews 11:1 Mean? The Bible's Definition of Faith
  36. 36What Does James 1:17 Mean? Every Good Gift Comes Down
  37. 37What Does Revelation 21:5 Mean? I Make All Things New Is Present Tense

Carry deeper Bible study in your pocket

BiblePro brings AI-powered search, parallel translations, original-language tools and reading plans together — free to download, so you can study deeply anytime, anywhere.