Matthew 13:21
but it takes no real root in him, and lasts only a little while, and when trouble or persecution comes because of the message, he gives it up at once.
Luke 18:1
He gave them an illustration to show that they must always pray and not give up,
Acts 10:2
He was a devout man, who feared God, as did all the members of his household. He was liberal in charities to the people, and always prayed to God.
Ephesians 6:18
Use every kind of prayer and entreaty, and at every opportunity pray in the Spirit. Be on the alert about it; devote yourselves constantly to prayer for all God's people
1 Thessalonians 5:17
Never give up praying.