To renew means to replenish. Almost everything in our human and material realm needs ongoing replenishment. That’s why the word renew is frequently found in Scripture. Psalm 103:5 says, “[God] satisfies your mouth with good things, so that your youth is renewed like the eagle’s.” Isaiah said that those who wait upon the Lord will renew their strength and mount up with wings like eagles.

Notice how the two verses go together. We need to wait on the Lord, trusting His timing to work out our problems. He’s more patient than we are, and He knows how long it will take for circumstances to turn around. As we trust and wait, He satisfies us in other ways; He renews our strength.

Puritan writer William Gurnall wrote, “Hope assures the soul that while God waits to perform one promise, he supplies another. This comfort is enough to quiet the heart of anyone who understands the sweetness of God’s methods.” If you’re weary and worried today, wait on the Lord. He will replenish your strength and inward youthfulness.

There is not one minute when a believer’s soul is left without comfort. There is always some promise standing ready to minister to the Christian until another comes.
William Gurnall