Exodus 28:31-35

31“1You shall make the robe of the ephod all of violet. 32There shall be an opening 2at its top in the middle of it; around its opening there shall be a binding of woven work, like the opening of a coat of mail, so that it will not be torn. 33You shall make on its hem pomegranates of violet, purple, and scarlet material all around on its hem, and bells of gold between them all around: 34a golden bell and a pomegranate, a golden bell and a pomegranate, all around on the hem of the robe. 35It shall be on Aaron 3when he ministers; and its sound shall be heard when he enters and leaves the Holy Place before the Lord, so that he will not die.