38:7 And {d} this [shall be] a sign to thee from the LORD, that the LORD will do this thing that he hath spoken;
(d) For Hezekiah had asked for a sign for the confirmation of his faith, as in Isa 38:22, 2Ki 20:8, to which he was moved by the singular motion of God's spirit.
38:1-8 When we pray in our sickness, though God send not to us such an answer as he here sent to Hezekiah, yet, if by his Spirit he bids us be of good cheer, assures us that our sins are forgiven, and that, whether we live or die, we shall be his, we do not pray in vain. See 2Ki 20:1-11.