Gregory the Dialogist

If the iniquity which is in thine hand thou put far from thee, and wickedness dwell not in thy tabernacle, then shalt thou lift up thy face without spot, yea thou shalt be stedfast, and shalt not fear. Every sin is either committed in thought alone, or it is done in thought and deed together. …

Morals on the Book of Job, Book X ↗

Thomas Aquinas

For prayer is useful when man first puts evil aside and then asks God to stop punishing him. He speaks to this theme saying, "If you will take away the evil from yourself which is on your hands," namely, so that you desist from the evil work which you still have on your hands, "and if you will not remain in your tent," i.e. if you make restitution of what you have unjustly taken away and stored away. …

Commentary on Job ↗