[Old Yeller]

There’s nothing in the Bible about a Trinity.

Matthew 28:19 is one reference.
Therefore go and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit,

[Burkianfrombrklyn]

That’s the best support, but the concept of Trinity, that Father Son and Holy Spirit are all co equals, is doctrine developed over the years. But point taken.