And he shall command one of the sparrows to be immolated in an earthen vessel over living waters:

And the priest shall command that one bird be killed in an earthen vessel over running water:

'And the priest hath commanded, and he hath slaughtered the one bird upon an earthen vessel, over running water;

And the priest will give orders for one of the birds to be put to death in a vessel made of earth, over flowing water.

And he shall order that one of the sparrows be immolated in an earthen vessel over living waters.

Et praecipiet sacerdos ut mactetur avis una super vas fictile super aquas vivas.

Running water - literally, living water, i. e. water fresh from the spring Genesis 26:19; Numbers 19:17.

Over running water - Literally, living, that is, spring water. The meaning appears to be this: Some water (about a quarter of a log, an eggshell and a half full, according to the rabbins) was taken from a spring, and put into a clean earthen vessel, and they killed the bird over this water, that the blood might drop into it; and in this blood and water mixed, they dipped the instrument before described, and sprinkled it seven times upon the person who was to be cleansed. The living or spring water was chosen because it was purer than what was taken from pits or wells, the latter being often in a putrid or corrupt state; for in a ceremony of purifying or cleansing, every thing must be as pure and perfect as possible.

And the priest shall command that one of the birds be killed in an earthen vessel over (c) running water:
(c) Running water, or of the fountains.

And the priest shall command that one of the birds be killed,.... That is, shall command another priest to kill one of them, or an Israelite, as Aben Ezra; and who also observes, that some say the leper, or the butcher, as the Targum of Jonathan; the killing of this bird, not being a sacrifice, might be done without the camp, as it was, and not at the altar, near to which sacrifices were slain, and where they were offered: and this was to be done
in an earthen vessel over running water: this vessel, according to the Jewish traditions (a), was to be a new one, and a fourth part of a log of running water was to be put into it, and then the bird was to be killed over it, and its blood squeezed into it, and then a hole was dug, and it was buried before the leprous person; and so it should be rendered, "over an earthen vessel", as it is in the Tigurine version, and by Noldius (b); for how could it be killed in it, especially when water was in it? the killing of this bird may have respect to the sufferings, death, and bloodshed of Christ, which were necessary for the purging and cleansing of leprous sinners, and which were endured in his human nature, comparable to an earthen vessel, as an human body sometimes is; see 2-Corinthians 4:7; for he was crucified through weakness, and was put to death in the flesh, 2-Corinthians 13:4; and the running or living water mixed with blood may denote both the sanctification and justification of Christ's people by the water and blood which sprung from his pierced side, and the continual virtue thereof to take away sin, and free from it; or the active and passive obedience of Christ, which both together are the matter of a sinner's justification before God.
(a) Negaim, c. 14. sect. 1. (b) Ebr. Concord. part. p. 64. No. 318.

the priest shall command that one of the birds be killed . . . over running water--As the blood of a single bird would not have been sufficient to immerse the body of another bird, it was mingled with spring water to increase the quantity necessary for the appointed sprinklings, which were to be repeated seven times, denoting a complete purification. (See 2-Kings 5:10; Psalm 51:2; Matthew 8:4; Luke 5:14). The living bird being then set free, in token of the leper's release from quarantine, the priest pronounced him clean; and this official declaration was made with all solemnity, in order that the mind of the leper might be duly impressed with a sense of the divine goodness, and that others might be satisfied they might safely hold intercourse with him. Several other purifications had to be gone through during a series of seven days, and the whole process had to be repeated on the seventh, ere he was allowed to re-enter the camp. The circumstance of a priest being employed seems to imply that instruction suitable to the newly recovered leper would be given, and that the symbolical ceremonies used in the process of cleansing leprosy would be explained. How far they were then understood we cannot tell. But we can trace some instructive analogies between the leprosy and the disease of sin, and between the rites observed in the process of cleansing leprosy and the provisions of the Gospel. The chief of these analogies is that as it was only when a leper exhibited a certain change of state that orders were given by the priest for a sacrifice, so a sinner must be in the exercise of faith and penitence ere the benefits of the gospel remedy can be enjoyed by him. The slain bird and the bird let loose are supposed to typify, the one the death, and the other the resurrection of Christ; while the sprinklings on him that had been leprous typified the requirements which led a believer to cleanse himself from all filthiness of the flesh and spirit, and to perfect his holiness in the fear of the Lord.

Killed - By some other man. The priest did not kill it himself, because it was not properly a sacrifice, as being killed without the camp, and not in that place to which all sacrifices were confined. In an earthen - vessel - That is, over running water put in an earthen - vessel - Thus the blood of the bird and the water were mixed together, partly for the conveniency of sprinkling, and partly to signify Christ, who came by water and blood, 1-John 5:6. The running water, that is, spring or river water by its liveliness and motion did fitly signify the restoring of liveliness to the leper, who was in a manner dead before.