some denominations seem to think it's a sin or heresy to do someone more than once

Those denominations must have really high divorce rates..

Dunno what to tell ya, it's great.

Can you get more clean than clean?

Numbers are a human thing. The universe don't care

Probably the reason some other sects call double-dipping a sin, so as to not be like those Mormons.

Jesus was a revolutionary. He removed all weaknesses that could be used against the Jewish people, from temples to stockpiles to using money. He made the early church suck resources from an occupying force while giving nothing back, not even disobedience that could justify a crack down

In this process, he replaced many rituals with simpler versions that can be done without any special requirements. He reworked every ritual so that it couldn't be taken away, it couldn't be used to force compliance

Paul was a true believer and philosopher, his job was to sell it to the people. His words were canonized alongside the gospels because they were convenient when reframing Jesus's teachings with the values of the Roman religion... Plenty less convenient writings were buried instead

Paul was a transitional figure who found himself in between the early church and unexpected gentile converts... He had to rebrand the rituals for a wider audience while keeping the core message. Nothing against the guy... He was in an impossible position and did his best