The 13th-century Parisian illuminated manuscripts were primarily inspired by the Bible. These exquisite manuscripts, created by skilled artists and scribes, were richly adorned with intricate illustrations, decorative borders, and vibrant colors. They served as visual interpretations of biblical stories and texts, bringing them to life for the viewers. The illuminators drew inspiration from the religious narratives and themes found in the Bible, capturing the essence of spirituality and faith through their artistic expressions. While nature and stained glass windows may have influenced certain aspects of the illuminations, the Bible remained the primary source of inspiration for these remarkable works of medieval art.