God does not have temporary children. Temporary membership of His household is for the slaves only. They lose their membership when their slavery to wrongdoing takes over. Sadly you often see blessed believers, even believers gifted spiritually, initially supporting the truth, enthusiastic with the revelations of truth given in the grace of God, later getting bound by the teachings of those who maintain traditions of those who long ago joined with opposers of the truth. It is tough to resist such darkness. A picture of this was given in the scriptures about the Exodus and the Sojourn in the Desert. Many who came out of Egypt, saved from its slavery, became servants and slaves of rebellions, oppositions, and idolatries. They perished in their sins. God blesses believers, yes, but all have to hold fast to the teachings Jesus himself has given. Philosophies not part of the original gospel and original faith tempt any away into a false allegience which subtly opposes the truth. Oh, to see the faithful being permanently saved, staying with Jesus, truly children of God. Even Nature groans in its wait to see these children of God become evident. Revelation assures us there will be many gathered together at the resurrection of these.