Final answer:
Before its legalization, iconography in Christianity served both theological and cultural purposes, with some Christians embracing religious images while others opposed them due to pagan associations.
Step-by-step explanation:
Before Christianity was legalized in 313 C.E., the purpose of iconography to the faith was intertwined with theological arguments and cultural practices. Some Christians used religious images, adorning and illuminating them, while others criticized these practices due to associations with pagan customs. The debates surrounding religious images continued, resulting in regulations and legislation on their use. Icons became increasingly important in Byzantine culture, representing Christ, the saints, and biblical events.