2 Kings 20:2
Then he turned his face to the wall, and prayed unto the LORD, saying,
1 Kings 8:30
And hearken to the supplication of your servant, and of your people Israel, when they shall pray toward this place: and hear in heaven your dwelling place: and when you hear, forgive.
Psalm 50:15
And call upon me in the day of trouble: I will deliver you, and you shall glorify me.
Isaiah 38:2-3
Then Hezekiah turned his face toward the wall, and prayed unto the LORD,
Matthew 6:6
But you, when you pray, enter into your room, and when you have shut your door, pray to your Father who is in secret; and your Father who sees in secret shall reward you openly.