Exodus 28:35 KJV
And it shall be upon Aaron to minister: and his sound shall be heard when he goeth in unto the holy place before the Lord, and when he cometh out, that he die not.
Exodus 28:35, King James Version
In context
34 A golden bell and a pomegranate, a golden bell and a pomegranate, upon the hem of the robe round about.
35 And it shall be upon Aaron to minister: and his sound shall be heard when he goeth in unto the holy place before the Lord, and when he cometh out, that he die not.
36 And thou shalt make a plate of pure gold, and grave upon it, like the engravings of a signet, HOLINESS TO THE LORD.