John Trapp Complete Commentary - Genesis 17:13
Gen 17:13 He that is born in thy house, and he that is bought with thy money, must needs be circumcised: and my covenant shall be in your flesh for an everlasting covenant. Ver. 13. He that is born in thy house. ] Householders must see to it, that their families fear God. They walk not "in a perfect way" that do otherwise, Psa 101:2 that look not “Aedibus in propriis, quae prava, aut recta gerantur.” My covenant shall be in your flesh. ] That is, the sign of my covenant (by a metonymy of the... read more
John Trapp Complete Commentary - Genesis 17:12
Gen 17:12 And he that is eight days old shall be circumcised among you, every man child in your generations, he that is born in the house, or bought with money of any stranger, which [is] not of thy seed. Ver. 12. And he that is eight days old. ] This warrants our baptizing of infants of both sexes. See Trapp on " Gen 9:10 " (Great leap of logic here! Editor.) read more