Matthew 14:23
and when He had dismissed them, He went up to a hill in private to pray.
Mark 14:35
And going a little farther, He prostrated Himself, and prayed, if it were possible, that this hour might pass from Him.
Luke 6:12
And in those days He went out to a mountain to pray, and He continued all night in prayer to God.
Acts 10:9
On the morrow, while they were on their journey, and drawing near to the city, Peter went up on the top of the house to pray, about the sixth hour.
James 5:16-18
Confess your faults one to another, and pray for one another, that ye may be healed: the fervent prayer of a righteous man availeth much.