This shall be the law of the leprous person for the day of his cleansing. He shall be brought to the priest, and the priest shall go out of the camp...
Leviticus 14:2-3 ESV

The leper and the priest meet halfway. Someone brings the leper to the priest, while the priest goes out of the camp/city to examine him. This parallels how we are to take the gospel to all people, leading them to Messiah, while Messiah reveals himself to them through the hearing of the word.