Genesis 18:19

“In your seed all the nations of the earth shall be blessed, because you have listened to My voice.”

So Jacob said to his household and to all who were with him, “Put away the foreign gods which are among you and cleanse yourselves and change your garments;

“Only keep yourself and keep your soul very carefully, lest you forget the things which your eyes have seen and lest they depart from your heart all the days of your life. But make them known to your sons and to your grandsons.

“For I have kept the ways of Yahweh, And have not wickedly departed from my God.

“You only have I known among all the families of the earth; Therefore I will punish you for all your iniquities.”

But the son by the servant-woman had been born according to the flesh, while the son by the free woman through the promise.

Fathers, do not provoke your children to anger, but bring them up in the discipline and instruction of the Lord.

Do not neglect to show hospitality to strangers, for by this some have entertained angels without knowing it.