en_tn/mat/27/40.md

If you are the Son of God, come down from the cross

They did not believe that Jesus is the Son of God, so they wanted him to prove it if it was true. AT: "If you are the Son of God, prove it by coming down from the cross" (See: rc://en/ta/man/translate/figs-explicit)

the Son of God

This is an important title for the Christ that describes his relationship to God. (See: rc://en/ta/man/translate/guidelines-sonofgodprinciples)