This is how Maimonides defines it: What is repentance? It consists in this, that the sinner abandon his sin, remove it from his thoughts, and resolve in his heart never to repeat it, as it is said, ‘Let the wicked forsake his way, and the man of iniquity his thoughts’ (Isaiah 55:7)…it is also necessary that he make oral confession and utter the resolutions he made in his heart.13
