John 3:16

I believe the unbelievable, I receive the impossible, because it’s doable. — Jesse Duplantis

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God Promises Strength for the Day

You do not need strength for next year today. You need it for this morning. Here are the King James promises of strength, from Moses and Joshua to Isaiah and Paul.

Some days start heavy. You open your eyes and remember the hospital visit, the job you lost, the work that has to be done anyway. On those mornings a big speech about victory does not help much. What helps is knowing that God promises strength for the day, this one, and not one more.

Moses said it best near the end of his life, when he blessed the tribes of Israel one by one. To the tribe of Asher he said that their shoes would be iron and brass, strong enough for rough ground, and then he added a line people have leaned on ever since:

Thy shoes shall be iron and brass; and as thy days, so shall thy strength be.

Deuteronomy 33:25 (KJV)

The promise is not that you will feel strong all week. It is that the strength given will fit the day you are in. Tomorrow's strength comes with tomorrow.

Isaiah 40:31 in the King James Version: “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.”

Be strong and of a good courage: who said it, and when

If you search for Bible verses on being strong and courageous, you land in the same few chapters. The words were said over and over to one nervous man, Joshua, and then handed down to a young king.

Spoken bySpoken toWhat they were facingVerse
MosesAll IsraelCrossing into a land of walled cities without MosesDeuteronomy 31:6
MosesJoshua, in front of everyoneTaking Moses' place as leaderDeuteronomy 31:7 to 8
The LordJoshuaDividing the land among the tribesJoshua 1:6
The LordJoshuaKeeping all of God's lawJoshua 1:7
The LordJoshuaFear of going anywhere aloneJoshua 1:9
The people of IsraelJoshuaLeading a whole nation who promised to followJoshua 1:18
DavidSolomon his sonBuilding the house of the Lord1 Chronicles 28:20

Why say it so many times? Because Joshua needed to hear it. He had watched Moses lead for forty years. Now Moses was dead, a river in flood stood between Israel and the land, and Joshua was in charge. God did not tell him to feel brave. He gave him a reason to act brave anyway:

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.

Joshua 1:9 (KJV)

Every time the command appears, the reason is the same. The Lord goes with you. Courage in the Bible is not a feeling you work up. It is a choice you make because of who is beside you.

Strength for people who have run out

Isaiah wrote to people who felt God had stopped paying attention. They were saying that their way was hidden from the Lord. His answer is one of the best known promises in Scripture.

He giveth power to the faint; and to them that have no might he increaseth strength.

Isaiah 40:29 (KJV)

Notice who this is for: the faint and those with no might. It is not a reward for strong people. Isaiah even says that young men, the fittest people you know, will stumble. The ones who are renewed are those who wait on the Lord, which in the Bible means to hope in Him and keep looking to Him while nothing seems to change.

When strength looks like weakness

Paul and the thorn

Paul had something painful in his life that he called a thorn in the flesh. We are not told what it was. He begged the Lord three times to take it away. The answer was not the one he asked for:

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.

2 Corinthians 12:9 (KJV)

Paul came to see that his weak places were where Christ's power rested on him. If you are worn down by something that has not gone away, this promise is for you. God's grace is enough for today, and His strength fits right into the cracks.

Philippians 4:13 in its setting

Paul wrote Philippians from prison. Just before this verse he says he had learned how to live with plenty and how to go hungry. Then he says:

I can do all things through Christ which strengtheneth me.

Philippians 4:13 (KJV)

All things here means every circumstance, the full and the empty. It is a promise that Christ will hold you up through whatever comes, not a promise that you will win every contest. Read that way, it is even stronger, because it still works on the bad days.

Illustration of stacked memorial stones glowing in gold light under a deep blue sky

Three people who found strength in the Lord

David at Ziklag. He came home to find his town burned and the families taken. His own men talked about stoning him. First Samuel says he encouraged himself in the LORD his God, and then he got up and went after them.

Nehemiah's crowd. When the walls of Jerusalem were rebuilt, Ezra read God's law to the people and they wept as they heard it. Nehemiah, Ezra and the Levites told them to stop crying and go have a feast, because the joy of the LORD is your strength.

The writer of Psalm 73. Asaph admitted his body and heart were failing. He still said God was the strength of his heart and his portion for ever.

Strength, discipline and getting going again

Many people looking for motivation in the Bible want a push to keep going: to stay sober, finish school, keep a hard promise, or get out of bed. The promises of strength help with that, but they work differently from a pep talk. They point you away from your own willpower and toward God's help, and then they ask you to take the next step.

Hebrews admits that discipline does not feel good while it is happening. Afterward, it says, it yields the peaceable fruit of righteousness. That is honest. Good habits hurt before they help.

And if you have fallen down, there is a promise of restoration too. David sang that the Lord restores the soul, and through the prophet Joel God promised to restore the years the locust had eaten. Weak days are not the end of the story.

  1. Wake up with one verseRead Deuteronomy 33:25 or Isaiah 40:29 before you look at your phone.
  2. Name today's hard thingTell God plainly what you have to face before night.
  3. Ask for today onlyDo not ask for a year of strength. Ask for enough for this day.
  4. Take the next stepDo the first small thing in front of you, trusting He goes with you.
  5. Thank Him tonightBefore sleep, notice where you were helped, even a little.

A prayer for strength today

Lord, I do not have much left. You promised that my strength would match my days. Give me enough for this one. You told Joshua You would go with him wherever he went. Go with me into this morning. Where I am weak, let Your grace be enough.

Front cover of Every Promise of God, Book Two: Promises 296 to 620, Numbers through Esther, by Maurice Johnson

Read them one at a time

Book Two covers Numbers through Esther, including Deuteronomy, where Moses blesses each tribe, and Joshua, where God tells His new leader again and again to be strong. Every promise has a page of its own with the King James verse, who it was spoken to and a prayer to say out loud.

See Book TwoLook Inside on Amazon

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Common questions

Where does God promise strength for the day?

The clearest line is Deuteronomy 33:25, where Moses blessed the tribe of Asher: as thy days, so shall thy strength be. It means your strength will match the day you are given. Isaiah 40:29 adds that God giveth power to the faint.

Where in the Bible does it say be strong and courageous?

The words come again and again around Joshua. Moses said them to Israel and to Joshua in Deuteronomy 31:6 to 7, and God said them to Joshua three times in Joshua 1:6, 7 and 9. David later said nearly the same words to his son Solomon in 1 Chronicles 28:20.

Does Philippians 4:13 mean I can do anything I want?

Paul wrote it while explaining that he had learned to be content whether he had plenty or was hungry. The strength he meant was the strength to stay faithful in any situation. It is a real promise, but it is about enduring with Christ, not about winning every game or reaching every goal.

What if I feel weak even after I pray?

You are in good company. Paul asked God three times to take away a painful thorn, and God answered, My grace is sufficient for thee. Feeling weak is not failure. It is often the place where God's strength shows most.

Are these strength promises in the Every Promise of God books?

Deuteronomy, Joshua, Nehemiah and 1 Samuel are all in Book Two, which is on Amazon now. Psalm 27 and Psalm 73 come in Book Three, coming next. Isaiah and the letters of Paul will come in later books.