Heck. St. Augustine first wrote about Genesis not being literal.
Assuming you are referring to Creation, I'll call you out on that...
The early Christian Church Fathers constantly argued with the pagans about the age of the earth, or about the age of civilization. They were unanimous that God had created the earth less than 6,000 years before they wrote. For example, one of the most influential, Augustine (AD354–430), in his most famous work, City of God, has a whole chapter, Of the Falseness of the History Which Allots Many Thousand Years to the World’s Past, where he says:
‘Let us, then, omit the conjectures of men who know not what they say, when they speak of the nature and origin of the human race. … They are deceived, too, by those highly mendacious documents which profess to give the history of many thousand years, though, reckoning by the sacred writings, we find that not 6000 years have yet passed.’
Augustine clearly believed in a literal account of the Creation as written in the scriptures...NOW, you won't have to repeat that error again...