John Calvin Reformed @genevareformer

2. Then Hezekiah turned his face to the wall. He now relates the manner in which Hezekiah was affected when he received this message, that we may see his piety and faith. He does not break out into rage or indignation like unbelievers, but bears this affliction patiently.

Matthew Henry Presbyterian @wholebiblehenry

We may hence observe, among others, these good lessons: - 1. That neither men's greatness nor their goodness will exempt them from the arrests of sickness and death. Hezekiah, a mighty potentate on earth and a mighty favourite of Heaven, is struck with a disease, which, without a miracle, will certainly be mortal; and this in the midst of his days, his comforts, and usefulness.

Commenting on Isaiah 38:1-8

John Gill Reformed Baptist @doctorgill

Then Hezekiah turned his face to the wall,.... Not figuratively to the wall of his heart, as Jerom; but literally, either to the wall of his bedchamber where he lay sick, that his tears might not be seen, and his prayers interrupted, and that he might deliver them with more privacy, freedom, and fervency; or else to the wall of the temple, as the Targum...