Luke 18:7

And shall not God execute vengeance for his own elect, who cry out 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, repeating the same sentence.

Luke 6:12

Now it came to pass in those days, that he went out into a mountain to pray and continued all night in an oratory of God.

Luke 22:41-46

And he withdrew from them about a stone's cast, and kneeling down, he prayed,

1 Thessalonians 3:10

night and day most fervently praying that we may see your face, and amply supply the deficiencies of your faith?

2 Timothy 1:3

I thank God, whom I serve from my forefathers with a pure conscience, that I keep up a constant remembrance of thee in my prayers 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
Now it came to pass in those days, that he went out into a mountain to pray and continued all night in an oratory of God.
Luke 18:7
And shall not God execute vengeance for his own elect, who cry out to him day and night, though he bear long with them?
Luke 22:41
And he withdrew from them about a stone's cast, and kneeling down, he prayed,

Am not silent

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