God is a Spirit, and his commandments are spiritual. The natural man "CANNOT" know the things of the Spirit of God, until he has been "regenerated" "quickened" "born again" "saved". "been changed from a natural man, to a spiritual man". Ln the following manner:
The natural man, who is spiritually dead in sins (Eph 2:1) is walking according to the course of this world, according to the prince of the power of the air, the spirit that now worketh in the children of disobedience, having their conversation in the lust of their flesh, fulfilling the desires of their flesh and of their minds. (Eph 1:2-3). But God, who is rich in mercy, for his great love wherewith he love he loved us, even when they were dead in sins, quickened them together with Christ. (by grace are they saved)
Your false doctrine allows you the ability to accuse a person of not being born again, just because he believes in a different doctrine than the one that you believe. The doctrine of Jesus teaches that you are born again, even though you are believing in a false doctrine, with the desire that you would repent.
The house of Israel is made up of all of God's elect, most of whom turned away from him, and started worshiping idols (which includes those who are believing false doctrines, such as yourself). God blinded their eyes to seeing the truths contained in the scriptures, until they repent.
Glory be to God, he left in the midst of them a remnant, who were an afflicted and poor people, and they shall trust in the Lord. They shall do no iniquity, nor speak lies; neither shall a deceitful tongue be found in their mouth, for they shall feed and lie down, and none shall make them afraid. (Zeph 3:11-13).