איש איש ממלאכתו, the Torah tells of the various kinds of craftsmen of the Israelites and the readiness of each to contribute his skills.

למלאכה אשר צוה ה' לעשות אותה. The donations of the people exceeded what was needed to perform the specific tasks which alone G’d had commanded to be performed. G’d wanted no additions, nor omissions. This is expressed by the words לעשות אותה בלבד, “to perform only this task alone.” This was different from the Temples built by Solomon and Herod.

אל יעשו עוד מלאכה לתרומת הקדש, he did not proclaim that no more donations should be brought. But he did proclaim that no more work, such as spinning, weaving, etc, intended for materials used in the construction of the Tabernacle should be begun. Also timber which had been brought in the correct dimensions with the carved parts should not be brought anymore. Compare 35,24 which discusses the need of treatment of both skins and trees.

והמלאכה היתה דים, the work performed by volunteers for all spheres of the artisanship and craftsmanship required was adequate for the needs of the project

לכל המלאכה, for every manner of work required.

לעשות אותה והותר, in order to complete the work, and more. The craftsmen did not have to skimp on anything for fear that there would not be sufficient materials of the required quality to execute the plan in the best possible fashion.

ויעשו כל חכם לב בעושי המלאכה, the most qualified among them built the Tabernacle (components) which involved weaving shapes of figures into the cloth so that they could be seen both on the outside and on the inside. (compare Yuma 72) These “curtains” were not thick as was the dividing curtain, פרכת. This portion repeats everything that has already been mentioned in connection with the instructions in Parshat Terumah. The reason why the Torah repeated all this is to inform us that when it came to the execution of the project they did everything so as to correspond to G’d’s will and to bring it to conclusion and make it functional as G’d desired. הארון, seeing that the Ark was the most distinguished of the furnishings of the Tabernacle, Betzalel, the master craftsman and architect fashioned this item personally. The sages say of Betzalel that he was capable of using the letters of the alphabet of the Holy Tongue in a manner similar to the way G’d had used them when creating the universe. (compare Berachot 55)