Fun fact, spirit in the sky was made by a Jewish man who just liked the sound of gospel music and didn’t believe any of it. White Christmas is similar, Irving Berlin was also Jewish.
Sometimes creative people just want to make good art and in largely religious societies they can make their art more relatable or consumable by incorporating that religion
Edit to add: Michelangelo never even wanted to paint the Sistine Chapel ceiling. He … made it clear from the start that he resented the commission, which had been imposed upon him by the imperious and demanding “warrior pope”, Julius II.
Some absolutely beautiful things have been made in the name of religion, but underneath that I believe you see the beauty and creativity that the human spirit is capable of shine through, and those amazing people deserve credit much more than an invisible sky man or hierarchical power structure for supposedly inspiring it