Akey belief of calvinism in the 1500s was that human beings are born free from all sins. children should not attend religious services. only priests and popes should interpret the bible. some people are picked before birth for salvation

Explanation:

Calvinism is a Protestant theological system based on the doctrine of John Calvin (primarily) and other theologians of the time.

It should be noted that Calvinism emphasizes the authority of God over all things, being the Irresistible Grace one of the main beliefs of this doctrine. For this Calvin was based on the passage of the book of Romans, Chapter 8, verse 30 in the New Testament:

"Moreover whom he did predestinate, them he also called: and whom he called, them he also justified: and whom he justified, them he also glorified."

Being interpreted as the predestination of salvation, that God chose men and women for salvation, even before their birth.

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