Eventually you will yes. The guarantee part comes if you discard anything someone says that cant be confirmed with scripture. Hold someone or some entity as authoritative and you will quell the influence of the Holy Spirit and the guarantee is voided. Oh....eventually. Interesting. So--assuming neither of us is infallible in their Scriptural exegesis, which I'm sure you'll agree with--how come it's me that will eventually agree with your position, and not you that will eventually agree with mine?
>>how come it's me that will eventually agree with your position, and not you that will eventually agree with mine?<<
Show me scriptural proof or support for the assumption of Mary.