Isaiah 40:28 in the King James Version
Hast thou not known? hast thou not heard, that the everlasting God, the LORD, the Creator of the ends of the earth, fainteth not, neither is weary? there is no searching of his understanding.
Context
27 Why do you say, Jacob, and speak, Israel, “My way is hidden from the LORD, and the justice due me is disregarded by my God”?
28 Haven’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.
29 He gives power to the weak. He increases the strength of him who has no might.