Hebrews 9:19

For when Moses had told all the regulations of the Law to all the people, he took calves' and goats' blood, along with water, crimson wool, and a bunch of hyssop, and sprinkled the roll of the Law and all the people,

Treasury of Scripture Knowledge

Summary

And he spake of trees, from the cedar tree that is in Lebanon even unto the hyssop that springeth out of the wall: he spake also of beasts, and of fowl, and of creeping things, and of fishes.

The hyssop

Bible References

The hyssop

Hebrews 9:19
For when Moses had told all the regulations of the Law to all the people, he took calves' and goats' blood, along with water, crimson wool, and a bunch of hyssop, and sprinkled the roll of the Law and all the people,