The book of Exodus is not written in the proper order. We would expect it to follow chronological sequence, but in one extraordinary case, it is completely out of sequence. According to some commentaries, the commandment to build the Tabernacle was given as a reaction to the sin of the Golden calf. If so, the section called Terumah, which outlines all of these laws, should be written after the section of Ki Tisa, where the tragedy of the Golden Calf is retold. And yet it is written before. Why?
One explanation is that the commandment was, indeed, given before the Golden Calf sin, but Moses did not tell it to the people until afterwards. The Torah is written according to when God spoke to Moses, and not when Moses spoke to the people. By this explanation, everything is in proper sequence.
But another explanation occurs to me. If the command to build the Tabernacle was, as stated, a reaction to the sin of the Golden calf, for the Tabernacle would forever be compromised. If God gave the people the Tabernacle as an atonement and correction for the sin of the calf, the Tabernacle becomes a permanent reminder of that sin.
This is why it is not written after the story of the Golden calf. A powerful life message is delivered to us through this positioning of the chapters. By writing the section of Terumah before the Golden calf, the Torah is treating it as if this is life as it should be lived. The Tabernacle is not a compromise, is the fulfilled center of the Jewish people. True, had they not sinned it would not have been necessary to build a Tabernacle. Nonetheless, now that they sinned, THIS IS THE IDEAL WAY OF LIFE.
In other words, we are where we are, and yesterday cannot be erased. Whatever life choices we make become the completely fulfilled life. Regrets must be thrown out the door.
In a similar vein, there is a Medrash, a rabbinical commentary which embellishes this thought. When God said to Moses, "build me a sanctuary that I may dwell therein," Moses wondered how human beings could ever build such a large structure. After all, "even the heavens cannot contain" God's Glory. God responds to Moses, I am only asking you to construct a structure with 20 boards on the north, 20 boards on the south, and eight boards on the west.
The commentary continues, when God asked Moses to bring a sacrifice there, Moses wondered how humans could ever bring an adequate sacrifice? God answers that all they need to bring is the daily offering in the morning, and the daily offering of the afternoon.
The great Chofetz Chaim explains the underlying message here. God wants man do the best he can with the limitations that he has. The athlete who was injured must find a new way of life that will allow him to be the best that he can, and he must never look back. The people need to accept that the world changed when they worshiped the Golden calf, and do the most glorious thing that they can: build a beautiful Tabernacle.
So instead of looking back at our promising youth, and regretting that the dreams we had then have become impossible, we should discover what new, glorious Tabernacle we can each create in our lives. Only look forward, only find the most fulfilling new dreams to guide us in our lives.