Sacrifice is an ancient and universal human expression of religion. Sacrifice existed among the Hebrews long before the giving of the Torah. Cain and Abel offered sacrifices; Noah and his sons offered sacrifices, and so forth. When the laws of sacrifice were given to the Children of Israel in the Torah, the pre-existence of a system of sacrificial offering was understood, and sacrificial terminology was used without any explanation. The Torah, rather than creating the institution of sacrifice, carefully circumscribes and limits the practice, permitting it only in certain places, at certain times, in certain manners, by certain people, and for certain purposes. Rambam suggests that these limitations are designed to wean a primitive people away from the debased rites of their idolatrous neighbors.