Isaiah 38:15

“What shall I say? &c.] In a way of praise and thankfulness, for the mercies promised and received; I know not what to say; I want words to express the gratitude of my heart for the kindness bestowed. What shall I render to God for all his benefits? So the Targum, “what praise shall I utter, and I will say it before him?” for here begins the account of his recovery, and his thanksgiving for it: he hath both spoken unto me, and himself hath done it; the Lord had sent him a message by the prophet, and assured him that he should recover, and on the third day go up to the temple; and now he had performed what he had promised, he was restored, and was come to the house of God with his thank…”

“The second part of the song passes from prayer to thanksgiving at the prayer being heard. What shall I say?--the language of one at a loss for words to express his sense of the unexpected deliverance. both spoken . . . and . . . done it-- (Num 23:19). Both promised and performed (Th1 5:24; Heb 10:23). himself--No one else could have done it (Psa 98:1). go softly . . . in the bitterness--rather, "on account of the bitterness"; I will behave myself humbly in remembrance of my past sorrow and sickness from which I have been delivered by God's mercy (see Kg1 21:27, Kg1 21:29). In Psa 42:4, the same Hebrew verb expresses the slow and solemn gait of one going up to the house of God; it is found…”

“What shall I say? - This language seems to denote surprise and gratitude at unexpected deliverance. It is the language of a heart that is overflowing, and that wants words to express its deep emotions. In the previous verse he had described his pain, anguish, and despair. In this he records the sudden and surprising deliverance which God had granted; which was so great that no words could express his sense of it. Nothing could be more natural than this language; nothing would more appropriately express the feelings of a man who had been suddenly restored to health from dangerous sickness, and brought from the borders of the grave. He hath both spoken unto me - That is, he has promised. So…”

“38:15 I will walk humbly: Hezekiah might have previously taken his life and good health for granted. Now he recognized that these gifts from the Lord can be withdrawn at any time.”

“What: Jos 7:8; Ezr 9:10; Psa 39:9, Psa 39:10; Joh 12:27 I shall: Kg1 21:27 in the: Sa1 1:10; Kg2 4:27; Job 7:11, Job 10:1, Job 21:25 Isaiah 38:16”

“In strophe 3 he now describes how Jehovah promised him help, how this promise put new life into him, and how it was fulfilled, and turned his sufferings into salvation. "What shall I say, that He promised me, and He hath carried it out: I should walk quietly all my years, on the trouble of my soul?! 'O Lord, by such things men revive, and the life of my spirit is always therein: And so wilt Thou restore me, and make me to live!' Behold, bitterness became salvation to me, bitterness; And Thou, Thou hast delivered my soul in love out of the pit of destruction For Thou hast cast all my sins behind Thy back." The question, "What shall I say?" is to be understood as in Sa2 7:20, viz., What shall…”