I never said angels were adopted into the family of God. They are already in the family of God. Similar perhaps to Adam and Even before they fell.
Believers will be as the angels of God and there are warnings about the angels to believers if they go similar. This is very obvious. We see them being in a high place with God and still falling, so this is a warning to all who would do similar even though they are in a heavenly places in Christ.
Matthew 22:30
For in the resurrection they neither marry, nor are given in marriage, but are as the angels of God in heaven."
"Matthew 24:31
And he shall send his angels with a great sound of a trumpet,
Notice here that the angels are HIS angels, and he sent them. These angels belong to God. To be in this is to be in the Light and life of Christ.The apostles were HIS disciples, apostles sent ones by him, ordained ( called and chosen) and that was all twelve. How much clearer do you need?
"Matthew 25:31
When the Son of man shall come in his glory, and all the holy angels with him..."
Notice that HIS angels are HOLY. To be holy is to be in God. They cannot be HOLY without God and being in the life and light and truth of God. Angels that didn't fall are "of God". Paul calls believers
of God" also.
Satan was once in the truth of God and fell and then iniquity was found in him and he abode ( remained not in the truth). This shows that he was once in Christ in the truth. believers are said to be in Christ and in the truth. Jesus is the way the truth and the life.
John 8:44
Ye are of your father the devil, and the lusts of your father ye will do. He was a murderer from the beginning, and abode not inthe truth,..."
When The devil was first crated he was perfect in all his ways and walked with God. This shows clearly that a being can be in the truth and not abide in the truth and go away from God and in doing so fall and end up in the lake of fire one day.
Angels can be good or evil
"
Psalm 78:49
He cast upon them the fierceness of his anger, wrath, and indignation, and trouble, by sending evil angels among them.
2 Peter 2:4
For if God spared not the angels that sinned, but cast them down to hell, and delivered them into chains of darkness, to be reserved unto judgment;
The clear warning is if God speared not the angels that sinned then take heed if he spare not you also if you abide not in the faith and in the truth.
We do not depart from God by works so much, but through an evil heart of unbelief (Hebrews 3:12 KJV)
The angels that sinned were still angels, and yet they are going to the lake of fire.
'You miss the point that when the son was out of the fathers house the father said he was "dead". Not still alive as you imply. Yes a son can be a lost son or saved son. In some sense we are all Gods offspring Acts 17. And in Isaiah we read that of Israel specifically, they were all like sheep gone astray. yet not all will be in heaven. So some are lost SHEEP.
This is a classic attack and error of the eternal security camp. To try and make those who teach as my self fit into their works based salvation camp.
We are not saved by works of the flesh or works of the law that we do. it is by grace through faith we are saved. But Go's works on the cross and in us save us and if we do not abide in this work of God in us we are not justified.
Show me your faith without God's Sprit working in you and I'll show you my faith by God's Spirit working in me. As the body without the spirit is dead so faith without Christ in you working is dead.
God's works are always needed as we abide and endure and continue in the faith and continue in the grace unto the end.