Joshua 23:12,13

(12,13) if ye... make marriages with them... the Lord your God will no more drive out. — The common-sense of this warning is manifest. The God of Israel cannot treat as His enemies those whom Israel has united with itself, unless He also makes war on Israel. It was a long time before Israel learned the lesson how to live in the world without being of the world. It was not learnt until after the Babylonish captivity, and when learnt, it soon developed into a Pharisaical exclusiveness, which produced the very opposite effect to that which the law was intended to have.