“Then Jesus said

To the leper.

‘See that you say nothing

To any one!

But go!

Show yourself

To the priest!

Offer the gift

That Moses commanded,

As a testimony to them.’”

 

καὶ λέγει αὐτῷ ὁ Ἰησοῦς Ὅρα μηδενὶ εἴπῃς, ἀλλὰ ὕπαγε σεαυτὸν δεῖξον τῷ ἱερεῖ, καὶ προσένεγκον τὸ δῶρον ὃ προσέταξεν Μωϋσῆς εἰς μαρτύριον αὐτοῖς.

 

This admonition to the leper can be found in Luke, chapter 5:14, and Mark, chapter 1:41-42, perhaps indicating Mark as the source.  Jesus told the leper (καὶ λέγει αὐτῷ ὁ Ἰησοῦς) not to say anything (Ὅρα μηδενὶ εἴπῃς), often referred to as the messianic secret.  Jesus did not want anyone to know about his power.  Instead the leper was to show himself to the priest (ἀλλὰ ὕπαγε σεαυτὸν δεῖξον τῷ ἱερεῖ,), as recommended in Leviticus, chapter 14:2-9.  He should offer the gifts (καὶ προσένεγκον τὸ δῶρον) as outlined in Leviticus, since this is what Moses had commanded (ὃ προσέταξεν Μωϋσῆς) in the Torah.  He wanted this cleansed leper to show himself as a witness or testimony to the priests (εἰς μαρτύριον αὐτοῖς).