Whenever Aaron enters the Holy Place, he shall bear the names of the sons of Israel over his heart on the breastpiece of judgment, as a continual reminder before the LORD.
The most considerable of the ornaments of the high priest was this breast-plate, a rich piece of cloth, curiously wrought with gold and purple, etc., two spans long and a span broad, so that, being doubled, it was a span square, Exo 28:16.
Commenting on Exodus 28:15-30
And thou shall put in the breastplate of judgment the Urim and the Thummim,.... What these interpreters are at a loss about, both Jewish and Christian; some have confessed their ignorance of them, have conjectured they were only these two words and put in the duplicature of the breastplate; that the name of Jehovah, with other divine were put there and so called; and some...
And Aaron shall bear the names of the children of Israel in the breastplate of judgment upon his heart, when he goeth in unto the holy [place], for a memorial before the LORD continually. (m) Aaron will not enter into the holy place in his own name, but in the name of all the children of Israel.