Luke 18:7

And will not God execute the judgment of his elect, who cry day and night to him, even though he waits long on them?

Matthew 26:44

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

Luke 6:12

AND in those days he went out on the mountain to pray, and spent the whole night in prayer to God.

Luke 22:41-46

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

1 Thessalonians 3:10

desiring exceedingly, night and day, to see your face, and to perfect what is lacking of your faith?

2 Timothy 1:3

I thank God, whom I serve from my ancestors with a pure conscience, that I mention you incessantly 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
AND in those days he went out on the mountain to pray, and spent the whole night in prayer to God.
Luke 18:7
And will not God execute the judgment of his elect, who cry day and night to him, even though he waits long on them?
Luke 22:41
And he withdrew from them about a stone's throw, and kneeling down, prayed,

Am not silent

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