28 Don’t you know? Haven’t you heard? The Lord is the eternal God, the Creator of the whole earth. He’s never weak or tired; you can’t find out all he knows. 29 He gives strength to the weary and power to the powerless. 30 Even young people grow weak and tired—they fall down when they’re exhausted. 31 But those who trust in the Lord will have their strength renewed. They will fly high with wings like eagles. They will run and not be tired. They will walk and not be worn out.