How can metanoias quench the fury of anger?

Upon hearing that his brother Esau had gone out to meet him, Jacob bowed himself to the ground seven times before his brother and thus made peace with him and dissolved away the enmity that was in the heart of Esau (Gen. 33:3). When Abigail learned that David was in a fit of anger with Nabal her husband who had insulted him, she went to meet David and fell on her face before him, calming him and preventing him from shedding blood or taking revenge (1 Sam. 25:23). David admired Abigail’s wisdom and repented of his anger because of her wisdom and submissiveness. He said to her, “Blessed is your advice and blessed are you” (1 Sam. 25:33).

320 Hilarion Alfeyev, The Spiritual World of Isaac the Syrian (Liturgical Press, 2000): p. 151.