Matthew 14:23
After he had dismissed them he went up the hill by himself to pray. And when evening came on he was there alone,
Mark 14:35
And he went on a little way and threw himself on the ground and prayed that if it were possible he might be spared the hour of trial,
Luke 6:12
It was in those days that he went up on the mountain to pray, and passed the whole night in prayer to God.
Acts 10:9
The next day, while they were still on their way, and were just getting near the town, Peter went up on the housetop about noon to pray.
James 5:16-18
So confess your sins to one another and pray for one another, so that you may be cured. An upright man can do a great deal by prayer when he tries.