John Gill Commentary Leviticus 13:58

"And the garment, either the warp, or the woof, or whatsoever thing of skin it be, which thou shalt wash, if the plague be departed from them, then it shall be washed the second time, and shall be clean." — Leviticus 13:58 (ASV)

And the garment, either warp or woof, or whatsoever thing of
skin [it be], which you shall wash
After it had been shut up seven days, and viewed by the priest again: if the plague be departed from them: upon a review of them: then it shall be washed the second time, and shall be clean ;
and so reckoned even thoroughly clean, and used; this denotes the thorough washing and cleansing of sinners by the blood of Jesus, see (Psalms 51:2) ; this washing was by dipping; and so the Targum renders it; and Jarchi observes, that all washings of garments, which are for dipping, they interpret by the same word.