Hyssop, another exotic Biblical plant, was used for sprinkling in the ritual practices of the Hebrews. Ex 12:22 reads "And ye shall take a bunch of hyssop, and dip it in the blood that is in the basin, and strike the lintel and the two side posts with the blood that is in the basin; and none of you shall go out at the door of his house until the morning." Because of the reference found in Num. 19:6 ("And the priest shall take cedar wood, and hyssop, and scarlet, and cast it into the midst of the burning of the heifer"), we have called this fragrance "HOLY FIRE". Hyssop speaks of spiritual cleansing.

Ps 51:7 Purge me with hyssop, and I shall be clean: wash me, and I shall be whiter than snow.