So I can "believe in Jesus" without believing in the Father and the Holy Spirit? Jesus says he's greater than Moses, but since I don't have to believe in Moses, that really means he's greater than [redacted]? And what about all of this Paul and "salvation by grace apart from the law" stuff? That's all optional, I guess?
Your original comment doesn't comport with Scripture or even with common sense. "Belief in Jesus" fits with the whole framework of doctrine laid out in Scripture, or it's "belief" in a Jesus not taught in the Bible.
Well Jesus said he who believes in Him will have eternal life.
No man comes to the Father but by Him.
Not Mary or anyone else.
You are just hurt that there is zero evidence in Scripture that supports any kind of benefit to believing in Mary for anything related to anyone’s personal salvation.