*Minor differences ignored. Grouped by changes, with first version listed as example.
He turned his face to the wall - Contrast 1-Kings 21:4. Ahab turned in sullenness, because he was too angry to converse; Hezekiah in devotion, because he wished to pray undisturbed.
Then he turned his face to the (a) wall, and prayed unto the LORD, saying,
(a) That his mind might not be troubled.
he turned his face to the wall--not like Ahab (1-Kings 21:4), in fretful discontent, but in order to secure a better opportunity for prayer.
Turned his face - As he lay in his bed. He could not retire to his closet, but he retired as well as he could, turned from the company, to converse with God.
*More commentary available at chapter level.