***That's not because there's something wrong with Marian veneration, that's because Protestant worship is not true worship of God.***
What then is this "true worship" of which you speak? Incence and bells? Jesus said those that worship God must do so in spirit and truth.
***Authentic worship requires sacrifice, and a priesthood, and the only sacrifice that matters is Calvary. ***
There was one sacrifice. It is past tense. We look back to it as the OT saints looked forward to it. Jesus blood was shed ONCE for the forgiveness of sins. It is not repeated a thousand times a day all over the world.
"And by that will we have been sanctified through the offering of the body of Jesus Christ once for all.
And every priest stands daily at his service, offering repeatedly the same sacrifices, which can never take away sins. But when Christ had offered for all time a single sacrifice for sins, he sat down at the right hand of God, waiting from that time until his enemies should be made a footstool for his feet. For by a single offering he has perfected for all time those who are being sanctified." - Heb 10
How could it be more clear...???
"once for all",
"priests...offering repeatedly the same sacrifices, which can never take away sins"
"a single sacrifice"
"a single offering he has perfected for all time "
Yes, I believe I already said it was not repeated, only made present to us on earth.
"once for all"
By contrast to Jewish sacrifice, which had to be repeated and usually only was efficacious for one person.
"priests...offering repeatedly the same sacrifices, which can never take away sins"
Referring to Jewish temple ritual, not anything else.
"a single sacrifice"
Yes, indeed. No repeated sacrifice. If you find John Calvin in heaven, you can commiserate with him about the lies he told concerning Catholic belief on that point.
Now, why don't you quote the passages in Hebrews which point out that Jesus has entered the Holy of Holies to offer his own blood to the Father, and how he will (FUTURE TENSE!) appear again on the Last Day -- exactly as the Jewish High Priest appeared again after entering the Holy of Holies on Yom Kippur.
Better yet, why don't you explain why Hebrews 13:10 says, "We have an altar from which those who serve the tabernacle have no right to eat.". An altar is a table for sacrifice, "those who serve the tabernacle" is the Jewish priesthood, saying that they have "no right to eat" implies quite clearly that Christians do have a right to eat of that sacrifice offered on that Christian altar.