Hebrew, My sin; but sin seems here to be put for punishment, as before, Genesis 4:7 Genesis 19:15 Leviticus 5:1 Psalms 69:27 Proverbs 12:21; for Cain was not so sensible of his sin as of the ill effects of it, as himself shows, Genesis 4:14.
Related Commentaries of Genesis 4:13
Genesis 4:13
13 And Cain said unto the LORD, My punishment is greater than I can bear.