Musar su Malachia 2:7

We must try and understand why Rabbenu Bachyah was so selective in his comparison of the creation with the construction of the Tabernacle. He could have cited additional parallels. A look at a lengthy Midrash in Shemot Rabbah 33,4 quotes Rabbi Berechyah as presenting a long list of parallels between the Tabernacle and מעשה בראשית. The list includes many items found in the heavens such as ערפל, זבול, עצי שטים, כרובים, אופנים and many others. In each case Rabbi Berechyah demonstrates that the Tabernacle contained something parallel.

The exertion is that which a man completely detaches and removes himself from the physical, and clings always, at all periods and times to his G-d. In this manner, the prophets were called "angels", as said of Aharon: "For a priest's lips shall guard knowledge, and Torah shall be sought from his mouth; for he is an angel of the L-rd of Hosts" (Malachi 2:7), and it is said: "but they mocked the angels (prophets) of G-d" (Divrei Hayamim II 36:16). Even when he is engaged in physical actions required for his bodily side, his soul will not budge from its clinging on high. This is as written: "my soul clings after You; Your right hand supports me"(Tehilim 63:9).

From what I have explained you will understand that by means of the (animal) sacrifice man's "lower" will is elevated and thereby able to approach G–d's "higher" will. G–d's will in turn is also able to relate more closely to man's "lower" will. It is incumbent on the lowly to subdue his will by means of the sacrifice, so that man's soul, נפש, will identify with the נפש of the animal he offers up. When he does this the Torah will consider his sacrifice as if he had sacrificed his own נפש, his own life. When the priest offers the sacrifice, his נפש "sticks" to the נפש on the Celestial Altar in the first instance, and then proceeds to still higher regions. When that process is complete the priest is called מלאך. This is what Malachi 2,7 has in mind when he describes the function of the priest as מלאך ה' צבאות הוא.