Hebrews 9:19

For after Moses had declared every commandment of the law to all the people, he took the blood of calves and goats and [mixed it] with water, then sprinkled both the scroll [of the Agreement] and all the people with a hyssop branch covered by red wool [dipped in the mixture].

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 after Moses had declared every commandment of the law to all the people, he took the blood of calves and goats and [mixed it] with water, then sprinkled both the scroll [of the Agreement] and all the people with a hyssop branch covered by red wool [dipped in the mixture].