Luke 18:7

And shall not God vindicate his own elect, who cry to him day and night, though he bear long with them?

Matthew 26:44

And leaving them, he went away again, and prayed the third time, saying the same words.

Luke 6:12

And in those days he went out into a mountain to pray, and continued all night in the prayer of God.

Luke 22:41-46

And he was withdrawn from them about a stone's cast,

1 Thessalonians 3:10

Night and day praying exceedingly, that we may see your face, and perfect that which is wanting in your faith.

2 Timothy 1:3

I thank God, whom I serve from my forefathers with a pure conscience, that I have remembrance of thee in my prayers without ceasing night and day,

Treasury of Scripture Knowledge

Summary

O my God, I cry in the daytime, but thou hearest not; and in the night season, and am not silent.

Am not silent

Bible References

In the night

Luke 6:12
And in those days he went out into a mountain to pray, and continued all night in the prayer of God.
Luke 18:7
And shall not God vindicate his own elect, who cry to him day and night, though he bear long with them?
Luke 22:41
And he was withdrawn from them about a stone's cast,

Am not silent

Matthew 26:44
And leaving them, he went away again, and prayed the third time, saying the same words.