The main problem with Christianity (as understood today) is the lack of disciplic succession from Jesus. There is no living parampara. So anyone can claim to be a disciple of Jesus and believe all variety of stuff, which Jesus himself may or may not agree with!
The Hindu (Vedic) tradition mandates that one who wants to know God must find a spiritual teacher and inquire from him submissively and render service to him, as a disciple. And the qualities of such a spiritual master are delineated very clearly and in detail. The first and foremost quality is that he (or she, as the case may be - there have been women gurus) must himself be a disciple of an authoritative guru. No room for "self-made" teachers, who invent as they go along, making all kinds of wild claims and creating "truth" that is not in accord with the previous teachers.
Never had a real teacher, until recently. At times it is difficult to know who is teaching whom. (It's a very sharp edge.)