Leviticus 17:3

If he kill, &c. That is, in order to sacrifice. The law of God forbids sacrifices to be offered in any other place but at the tabernacle or temple of the Lord: to signify that no sacrifice would be acceptable to God, out of his true temple, the one, holy, Catholic Apostolic Church. (Challoner) --- On other occasions, many believe that the blood of oxen, sheep, and goats, was to be poured out in honour of God by the priest, who received a part of each. (Deuteronomy xviii. 3; xii. 15, 22.; Theodoret, q. 23.) Perhaps this law regards the time when the Hebrews sojourned in the desert; and that of Deuteronomy has a reference to those times when they should obtain possession of Chanaan. (Calmet) --- We read of some private people like Manue and Elias, who offered sacrifice at a distance from the tabernacle. But this was done by a particular inspiration of God, who dispensed with his own law. (St. Augustine, q. 56.; 3 Kings xviii. 23; Judges xiii. 19.) (Menochius) See Josue viii. 31.