What’s in a name?
Believing on someone, as the term is used in the Bible means believing all that they said and did, and walking as they walked, and obeying all that they commanded to do. (1John)
As Paul said many times, there those that claim to be what they are not, and they should be put out of the congregation after admonishing them.
As he said to Timothy, we must rightly divide the word of truth from the falsehood that abounds.
.
It’s hard to assess another’s soul over the internet....both of you acknowledge that Yeshua(as you have refered to him) or Jesus, or Emnanual as Christ come in the flesh, you just disagree about “the end game”!. At somepoint you have to drop the “disputations” Paul warned us not to get too involved in and remember the Christ that died for all of us!