Philoxenus of Mabbug

You see that all the good promptings which bring us to repentance result from the activity of the Spirit, and pure prayer, which brings all these good promptings to completion, is also stirred up in our soul as the result of the Spirit’s activity. He too, in a hidden way, initially arouses us to groans at the memory of our sins.

Just as with the former law of Moses, all the priests … must first offer a rational sacrifice to God for themselves, and only then for the people. In his prayer, the priest asks in the first place for forgiveness of his own sins and a cleansing of his own soul and body from all sinful thoughts and actions. Then each priest offers these prayers to God in accordance with the measure of his own purity of soul.