Leviticus 13:54

54 then the priest shall command that they wash the thing in which the plague is, and he shall isolate it 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 shall burn the garment, whether the warp or the woof, in wool or in linen, or anything of skin, in which the plague is: for it is a destructive mildew. It shall be burned in the fire.

53 "If the priest examines it, and, behold, the plague hasn't spread in the garment, either in the warp, or in the woof, or in anything of skin;

54 then the priest shall command that they wash the thing in which the plague is, and he shall isolate it seven more days.

55 Then the priest shall examine it, after the plague is washed; and, behold, if the plague hasn't changed its color, and the plague hasn't spread, it is unclean; you shall burn it in the fire. It is a mildewed spot, whether the bareness is inside or outside.

56 If the priest looks, and, behold, the plague has faded after it is washed, then he shall tear it out of the garment, or out of the skin, or out of the warp, or out of the woof: