<> Jesus sent the Holy Spirit upon His Church to Teach it all truth and Jesus said His Church is the Pillar and Ground of Truth. That Christian Catholic Church has always celebrated the Mass - that is what "ministering to the Lord" means.
As I see it, you are stuck on the horns of a dilemma having to reconcile Jesus' words with yours. It is an impossibility. I will follow Jesus' words and those that have kept them since Pentecost.<>
If you have experienced Pentecost you would hear and understand and agree with what it is I am saying. There is a difference between "religion" and "reality" when it comes to a saving relationship with God Almighty.