71 Here καί (kai) has been translated as “now” to indicate the transition to a new topic.
72 The ancient term for leprosy covers a wider array of conditions than what we call leprosy today. A leper was totally ostracized from society until he was declared cured (Lev 13:45–46).
73 This is a third class condition. The report portrays the leper making no presumptions about whether Jesus will heal him or not.

In other versions

And a leper came to him, imploring him, and kneeling said to him, “If you will, you can make me clean.”

A man with leprosy came to him and begged him on his knees, “If you are willing, you can make me clean.”

Then a man with leprosy came to him and, on his knees, begged him, “If you are willing, you can make me clean.”

A man with leprosy came and knelt in front of Jesus, begging to be healed. “If you are willing, you can heal me and make me clean,” he said.

And a leper came to him, entreating him and kneeling down, saying to him, “If you are willing, you are able to make me clean.”

And there came a leper to him, beseeching him, and kneeling down to him, and saying unto him, If thou wilt, thou canst make me clean.

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