Christ promised the Holy Spirit would bring to the lips of the Church the things which even his apostles had forgotten.
What did the apostles forget that the church knows? The co-reeder status of Mary?
Christ promised the Holy Spirit to all who are given faith in Jesus Christ. If you deny that, you may well be denying the Holy Spirit. Careful.
Protestants refuse Christ commandment to 'do this in memory of me'
No, Protestants do that very thing. We "remember" and give thanks for His one-time, perfect sacrifice for all the sins of His sheep," according to Hebrews 10.
It's those who presume Christ is offered again and again for the remission of sins that have already been forgiven by His one-time sacrifice on the cross who get it so very wrong. Just like the Jews got it wrong by repetitive sacrifices.
Hebrews 10.