John 17:3 and the Trinity?
And this is life eternal, that they might know thee the only true God, and Jesus Christ, whom thou hast sent.(KJV 1611)
If one, therefore, believes in the One true God and accepts The Messiah known as Jesus(sic)/Yeshua (and also believes in the Holy Spirit) is it really necessary for them to accept, believe, or understand the 'systematic' doctrine of Trinity?
Step one: Answer Yes, Maybe, or No
Step two: Provide Scriptural references
Step three: Explain and elaborate on how each of those scriptural references leads you to your conclusion(s).