There is no kind of *right* religion to join that will keep you out of hell.
No religion has the power to do that.
It's a restored relationship with God through the Messiah who came to be our redeemer.
Church is not necessary. Rituals, rites, sacraments, etc are not necessary.
The way is through faith as with Abraham who believed God and God credited it to him as righteousness.
So if a Jew converts to his own Christian Church of Himself, to whom will he appeal when a Muslim or Christian from another Church seeks to kill him for being a Jew? Is he a lamb to slaughter?