Exodus 28:33-35
33
On its hem you shall make pomegranates of blue, and of purple, and of scarlet, around its hem; and bells of gold between and around them:
34
a golden bell and a pomegranate, a golden bell and a pomegranate, around the hem of the robe.
35
It shall be on Aaron to minister: and its sound shall be heard when he goes in to the holy place before Yahweh, and when he comes out, that he not die.