Excerpted from the Stone Edition Chumash Commentary on Parashat Terumah:
. . . a major part of Exodus, which Ramban calls the Book of Redemption, discusses the Tabernacle. He explains that the redemption from Egypt was not complete with the physical departure from the land of Israel's enslavement, nor was it complete even with the giving of the Ten Commandments, even though the Revelation at Sinai was the goal of the Exodus. . . .
The Exodus had not achieved its purpose until the heights that the nation had achieved temporarily at Sinai were made a permanent part of existence by means of the Tabernacle, for Ramban shows in his commentary that the Tabernacle, as a whole and in its many parts, was symbolic of the historic experience at Mount Sinai. So, too, it was from the Holy Ark that God spoke to Moses, just as He had spoken to him from atop Mount Sinai, when giving him the Torah.
In this light, the Tabernacle was intended to be the central rallying point of the nation - ringed by the tribes and topped by the cloud of God's Presence - and the place to which every Jew would go with the offerings through which he hoped to elevate himself spiritually.
We have absolutely no concept of what we are lacking in this day with no Mikdash and no tangible evidence of God's Presence among us. There is simply no way to miss what you've never had, at least consciously. But surely the soul knows and the soul yearns and so HKB"H pleads with us . . .
From the days of your fathers you have departed from My laws and have not kept [them]. "Return to Me, and I will return to you," said the Lord of Hosts . . . . (Malachi 3.7)
~ SHABBAT SHALOM and CHODESH TOV ~