Leviticus 14:3
And the priest shall go forth out of the camp; and the priest shall look, and, behold, if the plague of leprosy be healed in the leper; And the priest shall go forth out of the camp; and the priest shall look, and, behold, if the plague of leprosy be healed in the leper;
The verse requires the priest to examine a person reported to be healed of leprosy to determine whether the plague is healed and whether he is free from the disease, clean, and in sound health. The priest goes forth out of the camp to make this examination, meeting the healed person outside rather than inside. The examination certifies complete recovery and declares the person clean and free from the disease, and only after that certification can the offering be accepted. Only after the cure is thus confirmed can the person return to home, family, community, and Israel's congregation without endangering others. In the case of the man healed by Jesus, even the priests who had condemned him to banishment testified that he was cured. That certification that he was free of disease was publicly pronounced and registered.
The verse belongs to the law of Moses for examining and restoring a healed leper, given as Leviticus 14:1-32 and 14:2-32, requiring the healed person to be presented to the priest and to bring the prescribed offering. The prescribed offering follows the examination and is made only after the priest has confirmed the cure. In accordance with this law, Jesus directed the man he had healed to go to the priest, show himself for examination, and make the offering commanded by Moses. That direction showed respect for the law of Moses and the Jewish code, upheld the law requiring offerings, and refuted the charge that his teaching opposed the law. The required examination and offering served as a testimony to the priests, witnessing both that Jesus respected the law and that he had power to heal. Its ceremonial requirements for offerings remained in force until his death, when type met antitype.