Unto Eleazar, who was the second priest, and, in some cases, the vicegerent or deputy of the high priest. To him, not to Aaron, because this service made him unclean for a season, Numbers 19:7, and consequently unfit for holy ministrations; whereas the high priest was, as far as possibly he could, to be preserved from all sorts of defilement, and constantly fit for his high and holy work. Without the camp; partly because it was reputed an unclean and accursed thing, being ceremoniously laden with the sins of all the people; and partly to signify that Christ should suffer without the camp, as he did, Hebrews 13:12, in the place where malefactors suffered, Leviticus 24:14. One; a person appointed by Eleazar for this work.
Related Commentaries of Numbers 19:3
Numbers 19:3
3 And ye shall give her unto Eleazar the priest, that he may bring her forth without the camp, and one shall slay her before his face: