Explanatory Notes on the Whole Bible, by John Wesley, [1754-65], at sacred-texts.com
isa 38:13I reckon - When I could not rest all the night even 'till morning, my thoughts were presaging that God would instantly break me to pieces, and the like thoughts followed me from morning 'till evening.
isa 38:16By these - By thy promises, and thy performance of them; therefore it is not strange, that one word of God hath brought me back from the jaws of death.
isa 38:18Praise - The dead are not capable of glorifying thy name among men upon earth. They cannot expect nor receive the accomplishment of thy promised goodness in the land of the living.
isa 38:20Was ready - Was a present help.