Parshat Vayakhel- Pekudei

Why are the parshiot of Teruma-Tetzveh repeated while the actual building of the mishkan took place in parshiot Vayakhel-Pekudei? Wouldn't it suffice to just state that Moshe built the mishkan as God commanded? An analysis of these questions contributes to an exploration of the dual nature of the mishkan and a deeper understanding of the nature of the relationship between Am Yisrael and Hashem.