John Calvin Commentary Exodus 36:1

"And Bezalel and Oholiab shall work, and every wise-hearted man, in whom Jehovah hath put wisdom and understanding to know how to work all the work for the service of the sanctuary, according to all that Jehovah hath commanded." — Exodus 36:1 (ASV)

Then wrought Bezaleel and Aholiab. Although Moses might have seemed unnecessarily verbose in recording the instructions God gave regarding the building of the tabernacle, he repeats this narrative here in almost the same words; and he does this for the best purpose and for very good reasons.

For it was very important that it could be seen by actual comparison how exactly the craftsmen had conformed everything to the pattern God had laid down. This was not only to commend their obedience but also because it was necessary that there should be nothing human in the structure. Although each of them might have worked diligently, it was still not lawful for them to introduce any of their own designs; indeed, it would have been a profanation of the sacred edifice if they did not follow in every detail what had been so carefully dictated to Moses.

This also might serve as a restraint on them in future times, so that they would not violate God’s commands by any change or innovation. They did not, in fact, understand the reason for everything regarding number or measurement; but it was fitting for them to be assured that God had commanded nothing without a purpose. Therefore, their minds also should have been lifted to the heavenly pattern, to reverently look up to the mysteries it contained, however obscure they were, until its full revelation.

This verbal repetition, then, reminds us how accurately human labor and skill in the construction corresponded to God’s command.