“Confession is an act of mortification,
it is as it were the vomit of the soul;
it breeds a dislike of the sweetest morsels
when they are cast up in loathsome ejections;
sin is sweet in commission,
but bitter in the remembrance.
God’s children find that their hatred
is never more keen and exasperated against sin
than in confessing.”

– Thomas Manton, Works, 4:457

“Like a dog that returns to his vomit is a fool who repeats his folly.” (Proverbs 26:11, ESV)