28 Have you no knowledge of it? has it not come to your ears? The eternal God, the Lord, the Maker of the ends of the earth, is never feeble or tired; there is no searching out of his wisdom.
29 He gives power to the feeble, increasing the strength of him who has no force.
30 Even the young men will become feeble and tired, and the best of them will come to the end of his strength;
31 But those who are waiting for the Lord will have new strength; they will get wings like eagles: running, they will not be tired, and walking, they will have no weariness.