קְדֹשִׁ֤ים יִהְיוּ֙ לֵאלֹ֣הֵיהֶ֔ם וְלֹ֣א יְחַלְּל֔וּ שֵׁ֖ם אֱלֹהֵיהֶ֑ם כִּי֩ אֶת־אִשֵּׁ֨י יְהוָ֜ה לֶ֧חֶם אֱלֹהֵיהֶ֛ם הֵ֥ם מַקְרִיבִ֖ם וְהָ֥יוּ קֹֽדֶשׁ׃
Santos serán á su Dios, <span class="x" onmousemove="Show('perush','Este es el <b>76to Precepto Negativo</b> enumerado por el Rambam en el Prefacio a Mishné Torá, su “Compendio de la Ley Hebrea” para todo el Pueblo de Israel.',event);" onmouseout="Close();">y no profanarán el nombre de su Dios</span>; porque los fuegos del Señor y el pan de su Dios ofrecen: por tanto serán santos.
Shenei Luchot HaBerit
Commandment 265 forbids a priest who has purified himself -but still awaits sunset after ritual immersion- to perform sacrificial service. At that point he is still in the state of a secondary degree of ritual impurity. Concerning this the Torah writes: ולא יחללו שם אלוקיהם (21,6). Sanhedrin 83 explains that as the verse is not needed, because the information contained in it is already known, it is available to derive additional laws of a related matter, in this case the continued טומאה status of someone awaiting the sun to set after he has completed the ritual of purification. The similarity of the expressions חילול on both occasions lends weight to the validity of this rule.