Genesis 17:27

And all the men of his house, those born in the house and those bought with money from a foreigner, were circumcised with him.

Genesis 18:19

For I have chosen him, that he may command his children and his household after him to keep the way of the LORD by doing righteousness and justice, so that the LORD may bring to Abraham what he has promised him."

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The Holy Bible, English Standard Version® copyright © 2001 by Crossway Bibles, a publishing ministry of Good News Publishers.