James
James 5:16ESV·traditional attribution

Therefore, confess your sins to one another and pray for one another, that you may be healed. The prayer of a righteous person has great power as it is working.

John Calvin Reformed @genevareformer

16 Confess your faults one to another. In some copies the illative particle is given, nor is it unsuitable; for though when not expressed, it must be understood. He had said, that sins were remitted to the sick over whom the elders prayed: he now reminds them how useful it is to discover our sins to our brethren, even that we may obtain the pardon of them by their intercession.

Matthew Henry Presbyterian @wholebiblehenry

This epistle now drawing to a close, the penman goes off very quickly from one thing to another: hence it is that matters so very different are insisted on in these few verses. I. The sin of swearing is cautioned against: But above all things, my brethren, swear not, etc., Jam 5:12.

Commenting on James 5:12-20

John Gill Reformed Baptist @doctorgill

Confess your faults one to another,.... Which must be understood of sins committed against one another; which should be acknowledged, and repentance for them declared, in order to mutual forgiveness and reconciliation; and this is necessary at all times, and especially on beds of affliction, and when death and eternity seem near approaching: wherefore this makes nothing for auricular confession, used by the Papists; which...