Final answer:
Religious themes, particularly Christianity, are often depicted in Christian art through stories and themes from the Old Testament that foreshadow the death and resurrection of Jesus Christ.
Step-by-step explanation:
The theme of religion, mainly Christianity, is represented in various ways in Christian art. Early Christian art often depicted stories and themes from the Old Testament that foreshadowed or paralleled the death and resurrection of Jesus Christ. Examples include Jonah being swallowed by a great fish and Moses striking the rock. However, direct images of the life of Christ, such as the Nativity, Crucifixion, and Resurrection, were not common in early Christian art due to the secretive nature of Christianity as a mystery religion.