And Adam lived an hundred and thirty years, and begat a son in his own likeness, after his image; and called his name Seth:
Adam lived an hundred and thirty years. The period of time intended by Moses was a year of twelve lunar months, as is evident from the language that he employs (Genesis 8:5).
And begat a son in his own likeness - both physically and morally. In outward features the son would naturally exhibit a resemblance to the blended features of his parents; but especially as to the inward, his soul, the filial image would be conformed to the moral character of Adam, not as he was at the period of creation (see the note at Genesis 1:26), but since he had become a degenerate creature, and, though the divine likeness was not entirely effaced (cf. Genesis 9:6), subject to moral disorder, and deteriorated both in his intellectual powers and spiritual qualities by sin. Like begets like; and so Seth inherited (cf. John 3:6), as all people do, the corrupt nature of fallen Adam. (See the note at Genesis 2:7 as to the law of human propagation.)