These verses are rather difficult. Their meaning appears to be: “The holy things of the children of Israel which are heaved before Yahweh” (see Leviticus 7:30) “shall not be profaned; and they shall incur a sin of trespass who eat of their holy things (so as to profane them).”
Related Commentaries of Leviticus 22:15
Leviticus 22:15-16
15 And they shall not profane the holy things of the children of Israel, which they offer unto the LORD;
16 Or suffer them to bear the iniquity of trespass, when they eat their holy things: for I the LORD do sanctify them.