Isaiah 40:29
He gives power to the weak. He increases the strength of him who has no might.
World English Bible (Public Domain)
In context
Before · Isaiah 40:27–28
27Why do you say, Jacob, and speak, Israel, “My way is hidden from the LORD, and the justice due me is disregarded by my God”? 28Haven’t you known? Haven’t you heard? The everlasting God, the LORD, the Creator of the ends of the earth, doesn’t faint. He isn’t weary. His understanding is unsearchable.
29He gives power to the weak. He increases the strength of him who has no might.