Shepherd of Hermas Commandment Tenth Cleanse yourself from this wicked grief, and you will live to God; and all will live to God who drive away grief from them, and put on all cheerfulness."[9] Tertullian On Prayer Whom does peace impede when rendering service to his Lord? What kind of sacrifice is that from which men depart without peace? Whatever our prayer be, it will not be better than the observance of the precept by which we are bidden to conceal our fasts;[106] Tertullian On Fasting Thereafter He prescribed to fasts a law-that they are to be performed "without sadness: "[63] Didache 1. But let not your fasts be with the hypocrites;[80]