Matthew 14:23
After he had sent the crowds away, he went up into the mountain alone, to pray. When night came he was there alone.
Mark 14:35
So he went a little farther, and throwing himself upon the ground, he prayed repeatedly that, if it were possible, the hour might pass away from him.
Luke 6:12
It happened about that time that he went out into the mountain to pray. He continued all night in prayer to God.
Acts 10:9
The next day, while they were still on their way and were approaching the town, about noon, Peter went up to the housetop to pray.
James 5:16-18
So confess your sins one to another, and pray for one another, that you may be healed. For the fervent prayer of a righteous man is mighty in its working.