2 Kings 20:2
Then he turned his face to the wall, and prayed to the LORD, saying,
1 Kings 8:30
Listen to the supplication of your servant, and of your people Israel, when they shall pray toward this place. Yes, hear in heaven, your dwelling place; and when you hear, forgive.
Psalm 50:15
Call on me in the day of trouble. I will deliver you, and you will honor me."
Isaiah 38:2-3
Then Hezekiah turned his face to the wall and prayed to the LORD,
Matthew 6:6
But you, when you pray, enter into your inner chamber, and having shut your door, pray to your Father who is in secret, and your Father who sees in secret will reward you.