The Anti-Priestly Polemic of Jesus

The New Testament scholar E.P. Sanders pointed out in the temple when Jewish priests would perform a sacrifice when they would somebody would bring a lamb or something there would be a sacrifice. Once the sacrifice was performed the priest would pronounce that their sins had been forgiven. They had that authority as priests. What Jesus has claimed is not to be God he's claiming to have greater authority than the priests. That this is an anti-priestly polemic it's got nothing to do with Jesus calling himself God. But there is a detail in Mark's gospel that Erman is overlooking that distinguishes it from the delegation to forgive sins that Jesus gives the apostles in John's gospel.