We may infer from the pasuk that once the Eiphod and the Choshen were attached, they were to remain that way always. Consequently, Aharon donned a single garment. This is inconsistent with the pasuk in Parashas Tzav (Vayikra 8:7,8), which implies that Aharon put on two separate garments. Horav David Feinstein, Shlita, suggests that in Parashas Tzav the Torah‘s intention was regarding the threads which connect the two garments, whether to be loosened or tightened, so that it fit the Kohen Gadol properly. Horav Feinstein proceeds to expound upon the symbolism between the two garments which were worn as one….
