Citations: Matthew 8:1-4 || Mark 1:40-45 || Luke 5:12-16
Narrative
A man "full of leprosy" approaches, kneels, and begs: "Lord, if you are willing, you can make me clean." Jesus, "moved with compassion," stretches out his hand and touches him: "I am willing," He said. "Be clean!" (BSB) Immediately the leprosy leaves him.
Jesus sternly charges him to tell no one, "but go, show yourself to the priest, and offer the gift that Moses commanded, as a testimony to them" (cf. Leviticus 14). But the man goes out and spreads the news, so that Jesus can no longer enter a town openly and stays in deserted places, yet people still come from everywhere.
Theological significance
The touch. "Leprosy" (a range of skin diseases, tsara'at) made a person ritually unclean and socially exiled (Leviticus 13-14); to touch a leper was to contract uncleanness. Jesus does the unthinkable, he touches the man. Yet instead of Jesus becoming unclean, his purity overflows and cleanses the leper. (The same direction-of-contagion-reversed pattern runs through Jesus' touching of a funeral bier at [Nain] and the unclean woman touching his garment.)
"If you are willing." The leper does not doubt Jesus' power, only his willingness. Jesus' answer settles it: "I am willing." The episode reveals not just ability but disposition: Jesus wants to cleanse the outcast.
A messianic sign. Cleansing a leper was rare and God-attributed in the Hebrew Scriptures (Miriam, Numbers 12; Naaman through Elisha, 2 Kings 5). Jesus lists "lepers are cleansed" among the signs that he is the Coming One (Matthew 11:5).
Law-honoring + the "messianic secret." Jesus sends the man to the priest and the prescribed offering, he upholds the Law and provides legal certification of the cure. The charge to silence is part of Mark's "messianic secret" motif (Jesus repeatedly damps premature, militarized messianic expectation).
Theological framing (multiple views)
Traditions read this as a genuine cleansing displaying Jesus' compassion and divine authority over defilement and disease. Mark's silence-charge is variously read as the secrecy motif (Wrede and after), as crowd-control to protect the ministry, or as protecting the man's reintegration through proper channels. The texts are presented here without committing to a single reconstruction.