What matters, is that the Bible does not define it as an article

of faith that Jesus is God, nor that the Holy Spirit is God. Articles of faith, properly understood, are doctrines necessary for salvation. And the Bible nowhere says that we need to know for salvation that Jesus is God, nor that the HS is God. And postbiblical councils have no authority to come up with new articles of faith, Paul wrote to us not to go beyond what is written. He meant written in the Bible, not written by any popes or councils after the Bible is finished.