Exodus 28:4

28:4 Now these are the garments that they are to make: a breastpiece, an ephod, a robe, a fitted tunic, a turban, and a sash. They are to make holy garments for your brother Aaron and for his sons, that they may minister as my priests.

Exodus 28:31-35

28:31 “You are to make the robe of the ephod completely blue. 28:32 There is to be an opening in its top in the center of it, with an edge all around the opening, the work of a weaver, like the opening of a collar, so that it cannot be torn. 28:33 You are to make pomegranates of blue, purple, and scarlet all around its hem and bells of gold between them all around. 28:34 The pattern is to be a gold bell and a pomegranate, a gold bell and a pomegranate, all around the hem of the robe. 28:35 The robe is to be on Aaron as he ministers, and his sound will be heard when he enters the Holy Place before the Lord and when he leaves, so that he does not die.