I take this chapter as important based on the fact that Jesus prescribed the same to the leper he healed.
Mat 8:1 When he was come down from the mountain, great multitudes followed him.
Mat 8:2 And, behold, there came a leper and worshipped him, saying, Lord, if thou wilt, thou canst make me clean.
Mat 8:3 And Jesus put forth his hand, and touched him, saying, I will; be thou clean. And immediately his leprosy was cleansed.
Mat 8:4 And Jesus saith unto him, See thou tell no man; but go thy way, shew thyself to the priest, and offer the gift that Moses commanded, for a testimony unto them.
Lev 14:1 And the LORD spake unto Moses, saying,
Lev 14:2 This shall be the law of the leper in the day of his cleansing: He shall be brought unto the priest:
John Gill has a useful comment on verse 2.
This shall be the law of the leper, in the day of his cleansing,…. Or the rules, rites, ceremonies, and sacrifices to be observed therein. Jarchi says, from hence we learn that they were not to purify a leper in the night:
he shall be brought unto the priest: not into the camp, or city, or house, where the priest was, for till he was cleansed he could not be admitted into either; besides, the priest is afterwards said to go forth out of the camp to him; but he was to be brought pretty near the camp or city, where the priest went to meet him. As the leper was an emblem of a polluted sinner, the priest was a type of Christ, to whom leprous sinners must be brought for cleansing; they cannot come of themselves to him, that is, believe in him, except it be given unto them; or they are drawn with the powerful and efficacious grace of God, by which souls are brought to Christ, and enabled to believe in him; not that they are brought against their wills, but being drawn with the cords of love, and through the power of divine grace, sweetly operating upon their hearts, they move towards him with all readiness and willingness, and cast themselves at his feet, saying, as the leper that came to Christ, “Lord, if thou wilt, thou canst make me clean”, Mat 8:2 Mar 1:40; and it is grace to allow them to come near him, and amazing goodness in him to receive and cleanse them.