Exodus 39:22-26

Then Bezalel made the robe of the ephod of woven work, all of blue; there was an opening [for the head] in the middle of the robe, like the opening in a coat of armor, with a hem around it, so that it would not be frayed or torn. On the hem of the robe they made pomegranates of blue, purple, and scarlet fabric, and fine twisted linen. They also made bells of pure gold, and put the bells between the pomegranates around the hem of the robe; a bell and a pomegranate, a bell and a pomegranate, all [the way] around the hem of the robe, for service and ministering, just as the LORD commanded Moses.