28, 29. (a) How does Jehovah remind his people that he will come to the aid of weary ones? (b) What illustration is used to show how Jehovah empowers his servants?

²⁸ Through Isaiah, Jehovah continues with encouragement for the despondent exiles: “He is giving to the tired one power; and to the one without dynamic energy he makes full might abound.

Isaiah 40:29

²⁹ When speaking of the need to give to the tired one power, Jehovah may have in mind the arduous journey that the exiles will have to make in order to return home. Jehovah reminds his people that it is characteristic of him to come to the aid of weary ones who look to him for support.

Meanwhile, we need not endure in our own strength. Jehovah, whose resources are inexhaustible, can impart power​—even “power beyond what is normal”—​to his servants in times of trial.​—2 Corinthians 4:7.