Most of those radical departures were heresies that died out in a generation or two.
Most of those radical departures were heresies that died out in a generation or two.
And others were Protestantism
Coptic Christians split off nearly 2 millennia ago, Mormons are only a hundred years old but look like they’re going strong. Lots of other offshoots out there, a MAGA church that has Trump as God’s final prophet would not surprise me.