Can you explain how a person, who was condemned by the law. and saved from that condemnation. could again be condemned by the law. Since no one, saved or not saved, can meet the requirement of the law (perfection).
A sinner, falling back to be a sinner , or a person saved from the condemnation of the law, yet is not really saved at all, makes no sense to us logical people.
The son still had his fathers blood in him, You can not break that bond, a son is always a son through blood. even people in Jesus day understood this.
We were adopted. paid for by the blood of Christ, that blood does not just stop running through us, that is perfect blood.