Luke 6:12
About that time He went out on one occasion into the hill country to pray; and He remained all night in prayer to God.
Mark 1:35
In the morning He rose early, while it was still quite dark, and leaving the house He went away to a solitary place and there prayed.
Matthew 6:6
But you, whenever you pray, go into your own room and shut the door: then pray to your Father who is in secret, and your Father--He who sees in secret--will recompense you.
Matthew 14:23-25
When He had done this, He climbed the hill to pray in solitude. Night came on, and he was there alone.
Mark 6:46
He then bade the people farewell, and went away up the hill to pray.
Mark 14:34-36
and He said to them, "My heart is oppressed with anguish to the very point of death: wait here and keep awake."
Colossians 4:2
Be earnest and unwearied in prayer, being on the alert in it and in your giving of thanks.
Hebrews 5:7
For Jesus during his earthly life offered up prayers and entreaties, crying aloud and weeping as He pleaded with Him who was able to bring Him in safety out of death, and He was delivered from the terror from which He shrank.