Free Children

Therefore, brothers and sisters, we are not children of the slave woman, but of the free woman. - Galatians 4:31

The old covenant and the new covenant - you can't mix the two. The Law and grace - they have no fellowship with each other. Like Isaac and Ishmael, (symbolically grace and works) they each only have one mother - the new covenant or the old covenant. Ishmael (works and law) was cast out and was not an heir with Isaac (grace). There was no visitation on weekends, no holiday visits, no child support, no inheritance, no co-habitation whatsoever. God was symbolically saying this: when grace comes, the law will be utterly done away with and cast out. Knowing this, God fulfilled the requirements of the law himself through Jesus Christ. Christ did for us what we couldn't do then and we certainly can't do now. You are free from the law and the power of sin through Jesus Christ!

Jeremiah 32:27 Behold I am the Lord, the God of all flesh: is there any thing too hard for me