Who believed that salvation is achieved through faith alone?

Who believed that God predetermines who will be saved

The belief that salvation is achieved through faith alone is known as Sola fide, a key tenet of Protestantism. Martin Luther, a prominent figure in the Protestant Reformation, strongly believed in this concept.

The belief that God predetermines who will be saved is known as Predestination. It is a theological doctrine associated with various branches of Christianity, including Calvinism. John Calvin, a Swiss Protestant theologian, is particularly known for his emphasis on predestination in his teachings.