Why was it important to have pictures and paintings on church walls?

Pictures and paintings on church walls were important for several reasons. Firstly, they served as visual storytelling tools to convey biblical narratives and religious teachings to largely illiterate congregations. Secondly, these artworks created an atmosphere of reverence and awe, enhancing the spiritual experience of worshipers. Additionally, they helped to instruct and inspire believers by illustrating the lives of saints and moral lessons, reinforcing the church's teachings and beliefs.