On the hem of the High Priest's robe there were bells and pomegranates that rang lightly as he walked and when he was to enter the sanctuary.
“A golden bell and a pomegranate, a golden bell and a pomegranate, all around the hem of the robe. Aaron shall wear it while officiating, so that the sound of it is heard when he comes into the sanctuary before the LORD and when he goes out – that he may not die” (Exodus 28:34-35).