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 subject), seem it never so simple, and prove it never so painful and shameful. The foolishness of God is wiser than men, that cry, Credat Iudaeus Apella ,& c.