2 Kings 20:2
Then he turned his face to the wall and prayed unto the LORD, saying,
1 Kings 8:30
Therefore, thou shalt hearken unto the supplication of thy slave and of thy people Israel when they shall pray in this place and hear in thy dwelling place, from the heavens; please hear and forgive.
Psalm 50:15
and call upon me in the day of trouble: I will deliver thee, and thou shalt glorify me.
Isaiah 38:2-3
Then Hezekiah turned his face toward the wall and prayed unto the LORD,
Matthew 6:6
But thou, when thou prayest, enter into thy chamber, and when thou hast shut thy door, pray to thy Father who is in secret; and thy Father who sees in secret shall reward thee openly.