Charles Ellicott Commentary Leviticus 20:22

"Ye shall therefore keep all my statutes, and all mine ordinances, and do them; that the land, whither I bring you to dwell therein, vomit you not out." — Leviticus 20:22 (ASV)

Ye shall therefore keep all my statutes. Like the prohibitions , the penalties here enacted for transgressing them conclude with an appeal to the Israelites to keep the Divine precepts, and not to be guilty of the crimes for which the former inhabitants of the land have been cast out.

That the land ... spue you not out. Better, lest the land ... vomit you out, as in Leviticus 18:28. For this figure of speech see Leviticus 20:25 of the same chapter.