Psalm 73:21 (b) GOD's dealings with this dear man of GOD, Asaph, David's song leader, hurt his mind and conscience, and he thus describes his feelings. The same truth is found in Acts 2:37.
Acts 9:5 (a) It must be that Saul's persecution of the Christians was hurting his own heart and conscience while he was doing it. GOD's message to the heart has this very result even to this day. (See also Acts 26:14).