My theology is mainstream traditional Christianity (in agreement with Catholicism, Orthodoxy, Anglicanism, mainline Protestantism, etc.).
You mentioned Messianic Jews. I am conversing with a Messianic Jew on another forum and he says I am going to hell because I do not believe in the resurrection. He says that Yeshua (the Messiah) was resurrected from the dead for the salvation of mankind so my not believing in the bodily resurrection puts me outside of God's plan for the salvation of humanity.
I told him I have never heard of such a thing and I said that everyone knows it was not the resurrection but rather the
cross sacrifice that saved humanity from their sins; even non-Christians know that!
Here is what Jesus said to that Christian today:
I am covered because I believe in Jesus. NOWHERE did Jesus ever say I have to believe in the resurrection to gain eternal life.
John 3:16: For God so loved the world, that he gave his only Son, that whoever believes in him should not perish but have eternal life.
John 3:36 He that believeth on the Son hath everlasting life: and he that believeth not the Son shall not see life; but the wrath of God abideth on him.
1 John 5:13 I write these things to you who believe in the name of the Son of God that you may know that you have eternal life.
John 5:24 Verily, verily, I say unto you, He that heareth my word, and believeth on him that sent me, hath everlasting life, and shall not come into condemnation; but is passed from death unto life.
So, what's the drill? When I ask him he has no verses that support his beliefs about me going to hell.