(9) In order to raise the estimation of the Temple, those who ministered therein received great honour: and the priests and Levites were therefore distinguished from the rest. It was commanded that the priests should be clothed properly with beautiful and good garments, “holy garments for glory and for beauty” (Exod. 28:2). A priest that had a blemish was not allowed to officiate; and not only those that had a blemish were excluded from the service, but also—according to the Talmudic interpretation of this precept—those that had an abnormal appearance; for the multitude does not estimate man by his true form but by the perfection of his bodily limbs and the beauty of his garments, and the temple was to be held in great reverence by all.

(1)“… say (Emor) to the Cohanim, the sons of Aharon, and you shall say to them, do not make yourselves impure from the dead of your people.” (Vayikra, 21:1)
Cohen represents the servant of God who sees all actions in the world as a result of the direct involvement (hashgacha) of G8d. He also sees that G8d’s desire is only to improve the creation. One who sees the world this way can will inevitably bear greivences when he confronts difficult situations in the world that are expressions of G8d’s stern judgment, (saying, “it’s not fair.”) One who believes that the world is run by chance has no address for his greivences. When he confronts situations in the world contrary to his desires, he will say that it came about by chance. Thunderous anger is only possible for the believer who sees everything as a decree from Heaven.
For this reason the Holy One, blessed be He, commands the Cohanim, believers and servants of G8d, “do not contaminate yourself from the dead of your people.” In other words, don’t become angry at God when confronting pain and suffering, as this kind of anger is itself the contamination from the dead. It is a response to the G8d’s judgments that bring about loss and absence in the world, as discussed in the holy Zohar. Therefore G8d commanded, “Emor el haCohanim - say to the Cohanim.” “Emor – say,” means speaking softly.. G8d enjoins us to whisper into the ears of the servants of G8d that they should not hold grudges when it comes to G8d's stern judgment, for the intentions of G8d are always in order to improve. Even when The Holy One conducts the world with the attribute of stern judgment, then too, G8d's intention at the depths is only to improve.