How did the humanist and medieval versions of Christianity differ? Responses Humanist Christians thought humans expressed the goodness of God. Medieval Christians believed humans existed to serve God.Humanist Christians thought humans expressed the goodness of God. Medieval Christians believed humans existed to serve God.   Medieval Christians believed that authority came from the pope. Humanist Christians instead thought all religious ideas came from the Bible.Medieval Christians believed that authority came from the pope. Humanist Christians instead thought all religious ideas came from the Bible.   Medieval Christians believed in the devil. Humanist Christians believed sin came only from humans.Medieval Christians believed in the devil. Humanist Christians believed sin came only from humans.   Humanist Christians thought that every person should be self-governing. Medieval Christians thought that God chose rulers.