Paul’s letter 1 Corinthians says Jesus isn’t actually co-equal to God in the longer run, since Jesus will be made subject to God when everything has been accomplished in the end
1 Corinthians , "God put all things under his feet." It is clear, of course, that the words "all things" do not include God himself, who puts all things under Christ. 28 But when all things have been placed under Christ's rule, then he himself, the Son, will place himself under God, who placed all things under him; and God will rule completely over all.
Recap: It looks as if it's bye-bye to the doctrine of a real Trinity.