ACC ~ 1 John 3 v12

NOT LIKE CAIN. DIDYMUS THE BLIND: We have had the commandment to love one another from the beginning, so that we should not fall into evil as Cain did, who murdered his brother. COMMENTARY ON 1 JOHN.

HE MURDERED HIS BROTHER. ANDREAS: Cain became unrighteous and turned into the very first person who killed a member of his family, thereby teaching human nature the way of murder. CATENA.

OF THE EVIL ONE. BEDE: John explains in what way Cain was of the evil one. Wherever there is jealousy, brotherly love is impossible. Rather the sin of the evil one, that is, the devil, is in that man’s heart, because the devil also rejected man because of his envy. The works of righteous Abel are works of love, whereas the works of Cain amount to hatred for his brother. It is only to be expected that someone who hates his brother will envy his works. ON 1 JOHN.

1 Jn