Why a trinity, some ask? Of what value is a trinity god belief to Satan? What does Satan want? Worship. How can he get worship? Either directly or indirectly. Indirectly? Worship that is not to God alone is Satanic. The trinity would serve these. How? The Holy 'Ghost' means holy 'demon'. Look it up. It is nameless in the trinity, like the Father is in the trinity. (But not the bible) It is worshipped as equally God, which is what Satan wants for himself. Demon trinities are common in pagan worship world-wide. Neither Judaism or Islam accept the trinity. One Christian religion does not.
The trinity shares the worship of God equally with the son and the ghost. That demeans the Father, who Satan hates. Satan also hates the Son Jesus, so making him the object of idolatry serves a purpose. All false teachings of the Devil Satan are forbidden. The trinity is Satan's top deceptive teaching to get the worship he desires.
It totally destroy's the first commandment but when you look deeper it even destroys the second and 3rd commandment as well.
The Trinity-Christ is just one of them and by far the biggest one, but sadly there are many false Christs
Some examples of false Christs are the:
-Jesus is God, Christ
-Quran's just a prophet, not the Son of God, Christ
-Litteraly word of God, Christ
-Father's flesh garment called Christ
-Reincarnated arch angel Michael Christ
-Brother of Satan, Christ
-Tolerance of all Sin Christ
-Pre existing Christ
-Co equal with the Father, Christ
-Same essence as God, Christ
There is only one Christ; The man Jesus Christ, Son of the living God, Born out of virgin Mary, mediator between God and mankind, the last Adam, creator of the the new man and new heaven, High priest of the new covenant, Image of God, the truth, the way and the life, Lamb of God, Lord and Savior, and the only begotten Son of God who in the future becomes the first born among many brethren.