Theophylact of Ohrid, on Jas 5:16

“Confess therefore your sins one to another: and pray one for another, that you may be saved. For the continual prayer of a just man availeth much.”

“The prayer of the righteous man has great power when the one for whom he prays also assists his prayer with spiritual sorrow, for if when others pray for us we ourselves spend our time in luxury, indulgence, and intemperance, then by this we weaken the power of the prayer of the one laboring on our behalf, and the word of blessed Peter is fulfilled in us: "When one builds and another tears down, what do they gain but toil?" (Sir. 34:23).”

Imported from an open dataset — not yet checked against the printed edition.