Above all, my brethren, do not swear, either by heaven or by earth, or use any oaths at all. Let your “Yes” mean “Yes” and your “No” mean “No.” Otherwise you may be condemned.
Is anyone among you sick? He should send for the presbyters of the Church so that they may pray over him and anoint him with oil in the name of the Lord. The prayer of faith will save the sick person, and the Lord will raise him up. And if he has committed any sins, he will be forgiven.
Therefore, confess your sins to one another and pray for one another, so that you may be healed. The prayer of a righteous man is powerful and effective.