Vayakhel-Pekuday by Rabbi David Hartley Mark

Could there possibly be an unnecessary parsha/Torah portion? All Vayakhel seems to do is repeat the extensive instructions how to construct the Mishkan, God’s sacred dwelling-place in the wilderness, all of whose details were given earlier, in Parshat Terumah. Why, therefore, repeat? It is because God wanted the Israelites to familiarize themselves with all the accoutrements of the Mishkan, because both God and His people were to rejoice in His having a place to dwell on earth, among His chosen people.