Once you've been adopted by the Father, he doesn't disown you. You can choose the gift of chastisement if you are disobedient. But there is no divorce court that you can disown your heavenly father once you have claimed His promise to you.
He who began a good work in you is faithful to complete it.
For if after they have escaped the pollutions of the world through the knowledge of the Lord and Saviour Jesus Christ, they are again entangled therein, and overcome, the latter end is worse with them than the beginning. 21For it had been better for them not to have known the way of righteousness, than, after they have known it, to turn from the holy commandment delivered unto them.?????