Tell them how you feel and get their side of of the story
The title of this example of art is Sarcophagus of the church of Santa Maria Antiqua.
It does contain Christian symbolism that was unrecognizable by pagans. It was also possibly made to be the tomb of a rich Christian living in the third century. It was made in 275 CE and contains the representations of many Biblical and non-biblical people.
I think the appropriate response is kouros statue. A kouros is a current term given to unattached old Greek models which first show up in the Archaic period in Greece and speak to bare male young people. In Ancient Greek kouros signifies "youth, kid, particularly of honorable rank".
Because its hard to depict what they mean because og the culture and because its hard to study it due to its conditions .!.