Midrash sa Mga Awit 85:9: Pesikta DeRav Kahana, Midrash Tanchuma, Pesikta Rabbati & Devarim Rabbah

Another interpretation: "On the day that Moses completed (kalot)." It is written as kalat (see above) -- [meaning] "on the day that the bride (kalah) entered the wedding canopy." Rabbi Elazar and Rabbi Shmuel bar Nachmani: Rabbi Elazar says, "On the day that Moses completed [establishing (l'kayem)]" -- [meaning] "on the day that his "settings up" (kimotav) stopped (kalu). It was taught that each and every day, Moses erected the Tabernacle, and on each and every morning, he sacrificed offerings upon it and dismantled it, but on the eighth day he erected it but did not dismantle it. Said Rabbi Zeira, from here [we learn] the setting up (kama) at night disqualifies it for service during the day. Rabbi Shmuel bar Nachmani says, even on the eight day he erected it and dismantled it. From where are these "dismantlings" derived? From that which Rabbi Zeira said, "On the day that Moses completed" -- on the day that his settings up stopped.
Rabbi Elazar and Rabbi Yochanan: Rabbi Elazar said, "On the day that Moses completed" -- on the day that the demons were eradicated (kalu) from the world. And what is the meaning of "no harm will befall you, no disease touch your tent" (Ps. 91:10, JPS tr.) -- from the moment that the demons were eradicated from the world (i.e., from that point on, "no harm will befall you, etc."). Said Rabbi Yochanan, why should I learn this from a different place (i.e., the quoted passage from Psalms), when we can learn it from its [original] place -- "Hashem will bless you and He will protect you" (Num. 6:24) -- and He will protect you from the demons.
Rabbi Yochanan and Rabbi Shimon ben Lakish: Rabbi Yochanan said, "On the day that Moses completed" -- on the day that enmity was eradicated (kalat) from the world. For before the Tabernacle had been established, there was enmity, and jealousy, and strife, and quarrel, and division in the world; but once the Tabernacle was established, it emplaced love, and endearment, and neighborliness, and righteousness, and peace in the world. And that is the meaning of, "I will hear what God [the Lord] will speak of; [for He will speak of peace to His people, His pious ones, and they will not return to folly] (Ps. 85:9). Said Reish Lakish, why should I learn this from a different place, when we can learn it from its [original] place -- "and may He grant you peace" (Num. 6:26).
"Establishing the Tabernacle" (Num. 7:1) -- Rabbi Yehoshua in the name of Rabbi Shimon ben Yochai: "Establishing the Tabernacle (i.e., without the word et)" is not written here; rather, "establishing et the Tabernacle."^*According to the rules of exposition, the inclusion of the (untranslatable) "et" must come to include something in addition to what is plainly stated in the text. What was established along with it? The world was established along with it. Before the Tabernacle was established, the world was wobbling; once the Tabernacle was established, the world had a solid base.

Another interpretation (of Lev. 7:11), “This is the law of the sacrifice for peace offerings.” This text is related (to Ps. 85:9), “Let me hear what God, the Lord, will speak; for He will speak peace unto his people and unto his saints.” The peoples of the world said to Balaam, “Why did the Holy One, blessed be He, tell Israel to bring Him sacrifices without telling us anything?” Balaam said to them, “The sacrifices are only peace (i.e., the peace offering). Whoever has accepted the Torah in which they are written must offer sacrifice. You rejected [Torah] from the start, and now you wish to offer sacrifices?” Whoever accepted it is the one who offers [sacrifices], as stated (in Ps. 29:11), “The Lord will grant strength to His people; the Lord will bless His people with peace (i.e., with peace offerings).” It is therefore stated (in Ps. 85:9), “Let me hear what God, the Lord, will speak; for He will speak peace unto His people and unto His saints.” What did He speak? (Lev. 7:11:) “This is the law of the sacrifice for peace offerings.” Why was [it worded], “the sacrifice for peace offerings?” Because it makes peace among the altar, the priests, and Israel. Come and see. The whole burnt offering belonged wholly to the flames. Also, in the case of the sin offering, its best parts and its devoted portions¹⁸Emurim. Perhaps from the Greek, meria, i.e., “thigh bones.” belonged to the altar, its skin and its flesh belonged to the priests, but there was no enjoyment from it for Israel. So also in the case of the guilt offering. However, in the case of the thank offering, its blood and its devoted parts belonged to the altar, the breast and the shoulder belonged to the priests, but the skin and flesh belonged to Israel. It resulted in making peace among the altar, the priests, and Israel. It is therefore called (in Lev. 7:11), “the sacrifice for peace offerings,” because it made peace for all.

… it is written there “Behold the heaven and the heaven of heavens cannot contain You…” (Melachim I 8:27) and here it is written “…the glory of the Lord filled the Tabernacle.” (Shemot 40:35) R’ Yehoshua of Sachnin said in the name of R’ Levi ‘to what is this likened? To an open cave at the edge of the sea. When the sea storms the cave is filled, but the sea is not reduced. So too, even though it is written that ‘the glory of the Lord filled the Tabernacle’ the upper and lower worlds did not lose anything of the brilliance of the glory of the Holy One, just as it is written “Do I not fill the heavens and the earth? says the Lord.” (Yirmiyahu 23:24) Therefore it is written here ‘And it was’. Just as the Divine Presence was here below at the beginning of the creation of the world but withdrew to above, now it returned to be below as it had been “And it was that on the day that Moses finished…” (Bamidbar 7:1) ... [Another explanation. “And it was that on the day that Moses finished erecting the Mishkan…” (Numbers 7:1)] R’ Simon said: at the time when the Holy One told Israel to erect the Tabernacle, He hinted that when the Tabernacle below is erected, the Tabernacle above is erected, as it says “And it was that on the day that Moses finished…” (ibid.) It does not say ‘erecting the Tabernacle’ but rather ‘erecting this (et) the Tabernacle.’ This refers to the Tabernacle above. The Holy One said: in this world, when the Tabernacle was erected, I commanded Aharon and his sons that they bless you. In the time to come I, in my glory, will bless you. So it is written “May the Lord bless you from Zion, He Who made heaven and earth.” (Psalms 134:3)