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>> “Do you believe in the Holy Trinity? Show me where that is in Scripture.” <<
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Trinity is an idea created by men as a crutch to explain the nature of God.
Attempting to make “The Trinity” a spiritual concept makes people stumble all over themselves.
There is absolutely nothing in the scriptures that says God is three separate beings. Yeshua constantly told men that he and the Father were one. This is obviously a confusing thing to us as limited mortals, but the word trinity leads us away from understanding, not toward it.
The Holy Spirit is God who comes to us as a comforter, and communicator. That fails to make the Holy Spirit another being.
Paul has told us that when we are face to face with God, we will know as we are known, but now only darkly as through an un-silvered glass. WE need to just accept that, and not expand upon our ignorance blindly.
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God is “one in three Persons.” If you do not believe the doctrine of the Holy Trinity, you are not a Christian.