וְקִדַּשְׁתּ֔וֹ כִּֽי־אֶת־לֶ֥חֶם אֱלֹהֶ֖יךָ ה֣וּא מַקְרִ֑יב קָדֹשׁ֙ יִֽהְיֶה־לָּ֔ךְ כִּ֣י קָד֔וֹשׁ אֲנִ֥י יְהוָ֖ה מְקַדִּשְׁכֶֽם׃
Thou shalt sanctify him therefore; for he offereth the bread of thy God; he shall be holy unto thee; for I the LORD, who sanctify you, am holy.
Read kabbalistic (mystical) interpretation of Leviticus 21:8: and classical mystical sources.