Our Spirit is in the Body of Jesus, in heaven instantly as we trust Jesus as Savior. The Holy Spirit takes the place of our Spirit to be our friend and teacher/comforter. Our soul is left here to be sanctified and our bodies will die to be replaced with an eternal glorified body. The fight for our soul should be our main goal on earth, but The Bible tells us He will finish the work He started either way. We will receive a new body upon entering the heavenly realm. There is much discussion about whether or not our bodies will be taken or left in the Rapture, but IMHO, our empty bodies will be left on the ground to be replaced with the glorified one leaving those left behind thinking there was mass death here on Earth.
There is but one God in multiple forms. God appeared to us as a burning bush, a cloud, pillar of fire, Melchizedek, the "Angel" left with Abraham at Sodom and Gomorrah, The "Angel" with Gideon, ect. "The Angel of the Lord" spoken of many times was always capitalized and in various subsequent verses referred to as "Lord". It was in fact God in angelic form. You can always tell God from an angel, as the angel always told the seer not to worship him. Jesus was God in the fleshly form. God is Spirit, but can be any form He chooses. Our final form will be to live in Heaven with God as the angels do now.
Is Satan an angel, an evil spirit, or a snake? In the final days, we will see a Beast, a false prophet, and an evil spirit as the counterfeit of the Holy Triune. It's all evil, and connected, however. Explaining Spiritual things to the flesh has always proven difficult. There have always been splits in the Body over some of these things. If a Muslim were to capture you, you should be able to explain that you worship one God, but if you insist on having 3, you will lose your head. John 17 makes it perfectly clear that Jesus and the Father are ONE. There is but one God, but in 3 forms. Please don't say we have 3 Gods. Just as we have ice, water, and steam, it's all H2O. If you ask a chemist what the symbol for ice is, it will still be H2O.
There is but one God in multiple forms.
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Let me say, everything I say are my beliefs. Everyone is entitled to their own beliefs, our beliefs don’t make it so and I realize that my beliefs don’t “make it so” but, I work hard to figure it out and follow Christ to the best of my abilities. I’ve been doing this for a very long time, I first started trying to figure out why the Holy Bible didn’t agree with the preacher in very early 60’s. With age often comes wisdom, I hope my understanding is true, I believe my understand is true but would never begrudge someone else their belief but I might be willing to point out what I think is obvious error.
And that is where the argument started. While it is true that John said that Christ and God The Father are one, He did not say they were the same. It is always dangerous to prove something with a snippet of Scripture. John also said in 17:21 that the Apostles must be one with Christ just as He (Jesus) is One with God The Father. So right away your argument using that verse is totally blown away. Later Christ says that all the Saints must be one with Him(Christ) just at He (Christ) is one with The Father.
There is only one Queen Elizabeth of England on earth right now but her son, the idiot, I mean Charles is also Royal. There is only one “God”, God The Father, Elohim. Christ Jesus is His Son and also Divine. While I realize many people pray to God The Father, to Jesus Christ and even to The Holy Ghost and some pray to the Saints, I personally believe that we are instructed in the Bible to pray to God the Eternal Father and do it in the name of Jesus Christ.
Trinitarians do not believe that God is "three separate beings".