John MacArthur, Matthew 1-7, Moody, 1985, p. 66.
The sorrow of true repentance is…sorrow for offense against a holy God, not simply regret over the personal consequences of our sin. Sorrow over being found out or over suffering hardship or discipline because of our sin is not godly sorrow, and has nothing to do with repentance. That sort of sorrow is but selfish regret, concern for self rather than for God. It merely adds to the original sin.
John MacArthur, Matthew 1-7, Moody, 1985, p. 66.