2 Kings 20:2

Then he turned his face to the wall, and prayed unto the LORD, saying,

Turned his face to the wall. Not like Ahab (see the notes at 1 Kings 21:4 for an account of the position of beds), in fretful discontent, but in order to secure a better opportunity for prayer, to conceal his face from the notice of his attendants, that the fervency of his devotion might not be observed. But Lamy thinks that Hezekiah turned his face to the wall because he meant to pray looking in the direction of the temple ('De Tabernaculo,' lib. 7: cap. 1: sec. 5.