The ancient greeks were what you would call "pagans". They were significantly more scientifically advanced than Dark Ages Europe would be nearly a thousand years. They developed much of the basic algebra and geometry you learned at school (Thales, Pythagoras, Euclid, etc...), measured the width of the Earth (Eratosthenes) and it's distance to the Sun with extreme accuracy (Aristarchus of Samos), estimated the stars in the sky to be at least 2 light years away (Aristarchus of Samos), drew the first heliocentric model millennia before Copernicus (Aristarchus of Samos, again), invented Calculus thousands of years before Newton (Archimedes), founded the first university outside of India (Plato's Academy), and they even built mechanical computers capable of predicting the motion of planets and moons thousands of years in advance (Antikythera mechanism).

It took a millenium and a half for the Renaissance to come and western science to crawl back at where it was before Christianity ruined the Roman Empire. If not for classical pagan culture the west would probably still be a backwards shithole to this day. But go ahead, hang on to your jewish god.