James 5:16 Confess your faults one to another, and pray one for another, that ye may be healed. The effectual fervent prayer of a righteous man availeth much.

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

Colossians 4:2 Continue in prayer, and watch in the same with thanksgiving;

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