Leviticus 11:44 Commentary - Ellicott's Commentary for English Readers (Old and New Testaments)

(44) For I am the Lord your God.—As the Lord who is their God is Himself holy, His people, in order to enjoy perfect communion with Him, must also be holy. Hence they must abstain from all these objects of defilement which mar that holy communion. Appealing to this declaration, the Apostle Paul uses the same admonition: “As he which hath called you is holy so be ye holy in all manner of conversation, because it is written, Be ye holy, for I am holy” (1Pe. 1:15-16).

Ye shall therefore sanctify yourselves, and ye shall be holy.—Better, Sanctify yourselves therefore, and be ye holy, as the Authorised Version renders exactly the same phrase in Lev. 20:6.