Luke 6:12
About that time, Jesus retired to a mountain to pray, and spent the whole night in an oratory.
Mark 1:35
On the morrow rising up, while it was yet dark, he went out, and retired into a solitary place, where he prayed.
Matthew 6:6
but you, when you pray, enter into your closet, and when you have shut the door, pray to your father who is with you in your retirement, and your father who observeth the actions of your retirement shall reward you.
Matthew 14:23-25
and when he had dismiss'd them, he retired by himself to a mountain to pray: where he stay'd all alone till the latter part of the evening.
Mark 6:46
and when they had taken their leave, he retired to a mountain to pray.
Mark 14:34-36
even unto death: tarry ye here, and watch.
Colossians 4:2
Persevere and be vigilant in prayer and in thanksgiving:
Hebrews 5:7
this was Jesus, who while he was in a mortal body, having offered up prayers and supplications, with strong cries, and with tears, to him that was able to save him from that death, was heard so as to be delivered from his fear;