Matthew 8:4

the gift that Moses commanded "two birds alive and clean, and cedar wood, and scarlet and hyssop." And on the eighth day "two he lambs without blemish, and one ewe lamb of the first year without blemish, and three tenth deals of fine flour for a meat offering, mingled with oil, and one log of oil." Leviticus 14:4; Leviticus 14:10.

for a testimony unto them Either (1) to the priests, or (2) to the people who were following Jesus; in either case to shew that Jesus came to fulfil the law. Christ enjoins the cleansed leper to tell no one, thus instructing us that He would not have people converted by His miracles. Christ addresses Himself to men's hearts not to their eyes or ears. He will not fling Himself from the height of the temple to persuade men.