Matthew 26:44
And leaving them again, he went away [and] prayed for the third [time], saying the same thing again.
2 Corinthians 12:8
Three times I appealed to the Lord about this, that it would depart from me.
Daniel 9:17-19
"And now, listen to the prayer of your servant and to his pleas for mercy. Shine your face upon your desolate sanctuary {for your sake, O Lord}.
Matthew 6:7
"But [when you] pray, do not babble repetitiously like the pagans, for they think that because of their many words they will be heard.
Luke 18:1
And he told them a parable to [show that] they must always pray and not be discouraged,