The quote above comes from a post by Richard Beck. Here’s what follows immediately after:
Protestantism was created when Martin Luther was asked to recant his teachings at the Diet of Worms, asked to submit to the magisterium (teaching authority) of the church. There Luther famously declared: “To go against conscience is neither right nor safe. Here I stand I can do no other.”
That’s Protestantism. The elevation of the individual’s conscience over the magisterium (teaching authority) of the church.