'And I will make you swear by Jehovah, the God of heaven and the God of the earth' means an utterly sacred binding to the Divine which existed in highest things and in the things derived from these. 'That you do not take a wife for my son from the daughters of the Canaanites' means that the Divine Rational should not be joined to any affection incompatible with truth. 'In whose midst I am dwelling' means incompatible things in the maternal human that surround. 'But go to my land and to the place of my nativity' means to the Divine celestial and spiritual things which the Lord acquired to Himself. 'And you shall take a wife for my son Isaac' means that from this came the affection for truth which was to be joined to the affection for good belonging to the Rational.