Not "come and see" but "come and hear" (with understanding).
Not "go and show" but "go and teach" (with understanding).
Matthew 28:19 Go ye therefore, and teach all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Ghost: [kjv]
πορευθεντες ουν μαθητευσατε παντα τα εθνη βαπτιζοντες αυτους εις το ονομα του πατρος και του υιου και του αγιου πνευματος [gnt]
The song "
Go tell it on the mountain" was originally a Negro spiritual. After the Civil War, at Fisk College in Tennessee, a singing group with a slave heritage went around singing to raise money for the school. The song was finally written down and, over time, became popular as a Christmas song, talking about the shepherds and the birth of Jesus.
Negro spiritual, written down before forgotten
Children did not value their slave heritage
Sung at Christmas, Easter, and other times.