Is the Trinity Necessary for Salvation?

Don't get me wrong, ignorance is an excusable thing. I don't walk through the doctrine of the Trinity when I lead someone to Christ. But, if one willingly denies this doctrine they are denying the very substance, character, as counsel of God.
The Trinity is simple. Yet, hard to swallow. There are not three gods in the Trinity. We do not worship a three headed God either. As good as the Jehovah's Witnesses articles sound on this point, and the ancient statues they depict in their pamphlets, this is simply not true.
The Father, Son, and Holy Spirit are all God, but separate distinct persons. They share the save attributes and substance, and they even share the same divine will.

Non-Trinitarians reject the Trinity because they see it as offensive. According to their worldview, there cannot be three equal gods. This is an issue. They Fundamentally do not understand the doctrine and don't see that there are not three equal gods but one God with three coequal, coeternal distinct persons.

Soli Deo Gloria!