'Abraham took Ishmael his son' means those who are truly rational. 'And all born in his house, and everyone purchased with his silver, and every male among the men of Abraham's house' means here, as previously, those inside the Church in whom truths of faith have been joined to goods. 'And he circumcised the flesh of their foreskin' means their purification and righteousness from the Lord. 'On that same day' means that state which has been spoken of. 'Just as God had spoken to him' means according to perception.