Luke 18:7
and will not God avenge his elect, who cry to him day and night, though he delay long in respect to them?
Matthew 26:44
And he left them, and went away again, and prayed the third time, saying the same thing.
Luke 6:12
And it came to pass in those days, that he went out into the mountain to pray; and he spent the night in prayer to God.
Luke 22:41-46
And he withdrew from them about a stone's throw, and kneeled down, and prayed,
1 Thessalonians 3:10
night and day praying exceedingly that we may see your face, and perfect that which is lacking in your faith?
2 Timothy 1:3
I thank God, whom I serve with a pure conscience, after the custom of my forefathers, that, without ceasing, I have remembrance of you in my prayers night and day,