Leviticus 13:54

54 then the cohen is to order that the article having the infection be washed and isolated for seven more days.

Leviticus 13:54 Meaning and Commentary

Leviticus 13:54

Then the priest shall command that they wash [the thing]
wherein the plague [is]
The priest did not wash it himself, but ordered others to do it; and this was either the part in which the plague was, or the whole garment or skin in which it was; which may be typical of the washing of the garments of men in the blood of Christ, which cleanses from all sin, ( Revelation 7:14 ) ( 1 John 1:7 ) ( Zechariah 13:1 ) : and he shall shut it up seven days more:
the garment or skin in which the leprosy was, or suspected to be, to see what alteration would be made by that time through the washing, whether the colour would be altered, or whether it would spread any more or not.

Leviticus 13:54 In-Context

52 He is to burn the garment, threads, woven-in parts of either wool or linen, or item of leather having the infection; for it is a contagious tzara'at; it must be burned up completely.

53 But if, when the cohen examines it, he sees that the infection has not spread on the garment or in the threads, woven-in parts or leather item,

54 then the cohen is to order that the article having the infection be washed and isolated for seven more days.

55 The cohen is to examine it after the stain has been washed, and if he sees that the stain has not changed color, then, even though the stain has not spread, it is unclean; you are to burn it up completely - it is rotten, no matter whether the spot is on the outside or on the inside.

56 If the cohen examines it and sees that the stain has faded after being washed, then he is to tear the stain out of the garment, leather, threads or woven-in parts.