The Italians were very religious Catholics but why did they paint/sculpt heroes from Greek mythology? Weren't the Greeks considered pagans?
In the examples below, some artists like Michelangelo were considered to be very religious.
Years 1400-1600
Examples:
https://en.wikipedia.org/wiki/The_Birth_of_Venus
https://en.wikipedia.org/wiki/Perseus_with_the_Head_of_Medusa