The Encyclopædia Britannica states, "To some Christians the doctrine of the Trinity appeared inconsistent with the unity of God....They therefore denied it, and accepted Jesus Christ, not as incarnate God, but as God's highest creature by Whom all else was created....[this] view in the early Church long contended with the orthodox doctrine."
Nontrinitarianism - Wikipedia, the free encyclopedia
The two greatest commandments would still hold, love God and love your neighbor. Isn't everything else just window-dressing?
My understanding is that Jesus was God in the flesh.
I come to that conclusion from the gospel of John.
John 1:1
In the beginning was the Word, and the Word was with God, and the Word was God.
John 1:14
And the Word was made flesh, and dwelt among us.
John 8:58
Jesus said unto them, Verily, verily, I say unto you, Before Abraham was, I am.
John 10:30-31
I and my Father are one. Then the Jews took up stones again to stone him.
John 10:38-39
The Father is in me, and I in him. Therefore they sought again to take him.
John 14:9
He that hath seen me hath seen the Father.
John 20:28
And Thomas answered and said unto him, My LORD and my God.
And other verses reinforce my opinion.
Acts 20:28
Take heed therefore unto yourselves, and to all the flock, over the which the Holy Ghost hath made you overseers, to feed the church of God, which he hath purchased with his own blood.
Colossians 1:16
For by him [Jesus] were all things created.
Colossians 2:9
For in him [Jesus] dwelleth all the fulness of the Godhead bodily.
1 Timothy 3:16
God was made manifest in the flesh.
Titus 2:13
Looking for that blessed hope, and the glorious appearing of the great God and our Saviour Jesus Christ.
Philippians 2:6
Who, being in the form of God, thought it not robbery to be equal with God.
Hebrews 1:8
But unto the Son he saith, Thy throne, O God, is for ever and ever: a sceptre of righteousness is the sceptre of thy kingdom.
Revelation 1:17
Fear not; I am the first and the last.
Revelation 22:13
I am Alpha and Omega, the beginning and the end, the first and the last.