Prayer of Faith

Luke 18:1 "Men ought always pray and not faint" I Thess 5:17 "Pray without ceasing". Phil 4:6 Be careful for nothing but in everything by prayer and supplication with thanksgiving let your request be made known unto God. James 5:13-16 13. Is any among you afflicted? let him pray. Is any merry? let him sing psalms. 14. Is any sick among you? let him call for the elders of the church; and let them pray over him, anointing him with oil in the name of the Lord: 15. And the prayer of faith shall save the sick, and the Lord shall raise him up; and if he have committed sins, they shall be forgiven him. 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.