Cross reference
Matthew 14:23
23 And after he had sent the people away, he went up into the mountain by himself for prayer: and when evening was come, he was there by himself.
Luke 6:12
12 And it came about in those days that he went out to the mountain for prayer; and he was all night in prayer to God.
Mark 6:46
46 And after he had sent them away, he went up into a mountain for prayer.
John 6:15-17
15 Now when Jesus saw that the people were about to come and take him by force to make him a king, he went away again up the mountain by himself.
16 When evening came the disciples went down to the sea;
17 And they took a boat and went across the sea in the direction of Capernaum. By then it was dark and still Jesus had not come to them.
Matthew 6:6
6 But when you make your prayer, go into your private room, and, shutting the door, say a prayer to your Father in secret, and your Father, who sees in secret, will give you your reward.
Matthew 26:36
36 Then comes Jesus with them to a place named Gethsemane, and says to his disciples, Be seated here, while I go over there for prayer.
Luke 9:28
28 And about eight days after he had said these things, he took Peter and John and James with him and went up into the mountain for prayer.
Acts 6:4
4 Then we will give all our time to prayer and the teaching of the word.