Tune in Torah: Terumah

Berakhot 55a:13
Rav Yehuda said that Rav said: Bezalel knew how to join the letters with which heaven and earth were created. From where do we derive this? It is written here in praise of Bezalel: “And I have filled him with the spirit of God, in wisdom, and in understanding, and in knowledge, and in all manner of workmanship” (Exodus 31:3); and it is written there with regard to creation of heaven and earth: “The Lord, by wisdom, founded the earth; by understanding He established the heavens” (Proverbs 3:19), and it is written: “By His knowledge the depths were broken up and the skies drop down the dew” (Proverbs 3:20). We see that wisdom, understanding, and knowledge, the qualities with which the heavens and earth were created, are all found in Bezalel.

Malbim (Ukraine, 19th cent) on I Chronicles 29:5:1
Gold for golden objects" – Meaning, while I have prepared everything necessary for the external aspect of the building, both in the matter of the necessary materials, i.e. gold for the golden objects, and everything the laborers need for every craft in the hands of the artisans, and everything prepared – but in order for sanctity to be present in the Temple, one more thing is necessary, and that is the open-hearted donation of the people and their preparation, through which sanctity will be come to be present, as it is written, "as his heart may urge him you shall take my donation," for the essence of the donation to God is the urging of the heart, through which sanctity and God's comes to be present, and therefore, whosoever volunteers to fill his hand today to God – if the urgings of his heart will fill his hand for God, he shall be desirable in His eye

How is holiness organized? Abraham Joshua Heschel, The Sabbath (1951)
...The mythical mind would expect that, after heaven and earth have been established, God would create a holy place -- a holy mountain or a holy spring -- whereupon a sanctuary is to be established. Yet it seems as if to the Bible it is holiness in time, the Sabbath, which comes first.
When history began there was only one holiness in the world, holiness in time. When at Sinai the word of God was about to be voiced, a call for holiness in man was proclaimed: "Thou shalt be unto me a holy people." It was only after the people had succumbed to the temptation of worshipping a thing, a golden calf, that the erection of a Tabernacle, of holiness is space, was commanded. The sanctity of time came first, the sanctity of man came second, and the sanctity of space last. Time was hallowed by God; space, the Tabernacle, was consecrated by Moses.

Why such details about the materials and measurements of the Mishkan?

Rabbi Lord Jonathan Sacks z'l, Covenant & Conversation: The Architecture of Holiness (5772,5777)
God creates order in the natural universe. We are charged with creating order in the human universe. That means painstaking care in what we say, what we do, and what we must restrain ourselves from doing. There is a precise choreography to the moral and spiritual life as there is a precise architecture to the tabernacle. Being good, specifically being holy, is not a matter of acting as the spirit moves us. It is a matter of aligning ourselves to the Will that made the world. Law, structure, precision: of these things the cosmos is made and without them it would cease to be. It was to signal that the same applies to human behaviour that the Torah records the precise dimensions of the Tabernacle and Noah’s ark.

Midrash Bereshit Rabbati : attributed to Moshe HaDarshan of Narbonne, early 11th century
In the manner I [God] created the world and your body so shall you make the Tabernacle. Whence is this demonstrated? You find that the beams in the Tabernacle were set in sockets, the ribs in the body are set with vertebrae and mountains of the world are set in the earth’s foundations. In the Tabernacle the beams were covered in gold, in the body the ribs are covered with flesh and sinews which are taut and support the body and in the world trees and vegetation are spread throughout. In the Tabernacle the tapestries (יריעות) covered from above and the two sides, skin of the body covers the limbs and both sides of the ribs and the heaven covers both of earth’s sides. In the Tabernacle the partition (פרכת) divided between between the Sanctuary and Holy of Holies, the liver diaphragm separates the heart and the stomach and the sky separates between the waters above and the waters below.
"Letters of Maimonides": Rambam, 12th century Egypt
• The Holy Ark, the innermost part, alludes to the human heart, which is the innermost part of the body. The Ark was the main part of the Mishkan because it contained the Tablets of the Covenant. So, too, is the human heart the main part of the body. It is the source of one’s life, knowledge, and understanding.
• The menorah in the Mishkan alludes to the human mind. Just as the menorah gives forth light, so the intellect enlightens the entire body.
• The incense altar alludes to the sense of smell.
• The sacrificial altar alludes to the intestines, which digest the food that enters the body.
• The goats’ wool hangings allude to the skin that covers the human body.
"It is suggested here that just as the sanctuary structure resembles a human body, so the human body is a sanctuary, and therefore should be treated and respected as such." - Rabbi Alison Adler, The Jewish Journal ed. Feb 2020
The Slonimer Rebbe Sholom Noach Bereovsky, author of Netivot Shalom, Belarus/Israel 20th century
Netivot Shalom asks, “How is this mitzvah [to build the mishkan] eternal?” since it was only something we were commanded to do in that specific time and place. He answers his own question in this way, “Every person is an entire world before G!d, and thus we are commanded to make a mishkan inside of us, in our bodies. This is why G!d says, ‘and I will dwell in them,’ meaning in each and every person.” [adaptation by R'Hayley Goldstein]