What we need to realize is that it all comes down to the Messiah for the Jews and that Jesus is not it.
So that is why they think we are pagan. However, it seems to me that in this culture that little is known about Jesus at all. They do not even evaluate Jesus as a 'could be' Messiah, but instead totally ignore the idea at all because their culture is waiting for someone to set things right as far as Israel and the Jewish peoples are concerned. I may be wrong, but this is what I see.
I would rather call Jesus the Messiah or the Christ or the Lord or the Word of God. Why? Because whatever the name, it has been run into the ground and tread over, and abused, and lied about, falsely testified, and cast down to a position equivalent or slightly less than aspirin. Paul said and understood that this would all turn into DELUSION or spiritual drunkenness.
2Th 2:10 And with all deceivableness of unrighteousness in them that perish; because they received not the love of the truth, that they might be saved.
2Th 2:11 And for this cause God shall send them strong delusion, that they should believe a lie:
2Th 2:12 That they all might be damned who believed not the truth, but had pleasure in unrighteousness.
Deu 29:19 And it come to pass, when he heareth the words of this curse, that he bless himself in his heart, saying, I shall have peace, though I walk in the imagination of mine heart, to add drunkenness to thirst:
This comes about from removing your ears from the truth to follow after your own will.
2Ti 4:3 For the time will come when they will not endure sound doctrine; but after their own lusts shall they heap to themselves teachers, having itching ears;
2Ti 4:4 And they shall turn away their ears from the truth, and shall be turned unto fables.
That is why it takes hundreds of different church's to deceive the world around them.
Isa 24:20 The earth shall reel to and fro like a drunkard, and shall be removed like a cottage; and the transgression thereof shall be heavy upon it; and it shall fall, and not rise again.