Exodus 12:22

Hyssop - A bitter herb.

A bunch of hyssop - The original word אזוב ezob has been variously translated musk, rosemary, polypody of the wall, mint, origanum, marjoram, and Hyssop: the latter seems to be the most proper. Parkhurst says it is named from its detersive and cleansing qualities, whence it was used in sprinkling the blood of the paschal lamb, in cleansing the leprosy, Leviticus 14:4, Leviticus 14:6, Leviticus 14:51, Leviticus 14:52; in composing the water of purification, Numbers 19:6, and sprinkling it, Numbers 19:18. It was a type of the purifying virtue of the bitter sufferings of Christ. And it is plain, from Psalm 51:7, that the psalmist understood its meaning. Among botanists hyssop is described as "a genus of the gymnospermia (naked-seeded) order, belonging to the didynamia class of plants. It has under-shrubby, low, bushy stalks, growing a foot and a half high, small, spear-shaped, close-sitting, opposite leaves, with several smaller ones rising from the same joint; and all the stalks and branches terminated by erect whorled spikes of flowers of different colors, in the varieties of the plant. The leaves have an aromatic smell, and a warm pungent taste. The leaves of this plant are particularly recommended in humoral asthmas, and other disorders of the breast and lungs, and greatly promote expectoration." Its medicinal qualities were probably the reason why this plant was so particularly recommended in the Scriptures.

A bunch of hyssop - The species here designated does not appear to be the plant now bearing the name. It would seem to have been an aromatic plant, common in Palestine and near Mount Sinai, with a long straight stalk and leaves well adapted for the purpose of sprinkling.

Bason - The rendering rests on good authority and gives a good sense: but the word means "threshold" in some other passages and in Egyptian, and is taken here in that sense by some versions. If that rendering be correct it would imply that the lamb was slain on the threshold.

None ... shall go out ... - There would be no safety outside the precincts protected by the blood of the lamb; a symbolism explained by the margin reference.

12:22 Out of the door of his house - Of that house, wherein he ate the passover: Until the morning - That is, till towards morning, when they would be called for to march out of Egypt. They went out very early in the morning.