1 Samuel 1:12
And it came to pass, as she continued praying before the LORD, that Eli observed her mouth.
Luke 11:8-10
I say to 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 spoke a parable to 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 for this purpose with all perseverance and supplication for all saints;
Colossians 4:2
Continue in prayer, and watch in the same with thanksgiving;
1 Thessalonians 5:17
Pray without ceasing.
James 5:16
Confess your faults one to another, and pray one for another, that ye may be healed. The effectual fervent prayer of the righteous man availeth much.