Luke 11:8 I say unto you, Though he will not rise and give him, because he is his friend, yet because of his importunity he will rise and give him as many as he needeth.

Luke 18:1 And he spake a parable unto them to this end, that men ought always to pray, and not to faint;

Ephesians 6:18 Praying always with all prayer and supplication in the Spirit, and watching thereunto with all perseverance and supplication for all saints;

1 Thessalonians 5:17 Pray without ceasing.

Genesis 32:26 And he said, Let me go, for the day breaketh. And he said, I will not let thee go, except thou bless me.

Matthew 8:2 And, behold, there came a leper and worshipped him, saying, Lord, if thou wilt, thou canst make me clean.