As to the Urim and Thummim, "Light and Perfection," which were apparently placed within the fold of the breast-plate of judgment, as the tables of the law within the ark of the covenant, there has been in all ages much debate; but what they were cannot be said to have been certainly determined. Most probable appears the opinion that they were two sacred lots, which on solemn occasions were used by the high priest for determining the will of God. So much, in any case, is clear from the Scriptures, that in some way through them the will of God as the King of Israel was made known to the high priest, for the direction of the nation in doubtful matters. Most fitly, therefore, they were placed within the breast-plate of judgment, which, indeed, may have received this name from this circumstance. The high priest, therefore, as the bearer of the Urim and Thummim, was set forth, in accordance with the meaning of these words, as one who in virtue of his office received perfect enlightenment from God as to His will, in all that concerned Israel's action. The plate of graven gold, called the "holy crown," was bound by Moses with a lace of blue upon the mitre of Aaron in front. The precious metal here, as elsewhere in the official garments of the high priest, and in the tabernacle, was symbolic of the boundless riches of the glory of the God of Israel, whose minister the high priest was. The special significance, however, of this holy crown, is found in the words which appeared upon it, "Holiness to Jehovah." This was a continual visible mark and reminder of the fact that the high priest, in all that he was, and in all that he did, was a person in the highest possible sense consecrated to Jehovah, the heavenly King of Israel, whose livery he wore. And in that this golden plate with this inscription is called his "crown," it is further suggested that in this last-named fact is found the crowning glory and dignity of the high priest's office. He is the minister of the God of Israel, Jehovah, whose own supreme glory is just this, that He is holy. In the directions given for this crown in Exod. xxviii. 36-38 it is said that in virtue of his wearing this, or, rather, in virtue of the fact thus set forth, "Aaron shall bear the iniquity of the holy things which the children of Israel shall hallow in all their holy gifts; and it shall always be upon his forehead, that they may be accepted before the Lord." That is, even Israel's consecrated things, their holiest gifts, are yet defiled by the ever abiding sinfulness of those who offer them; but they are nevertheless graciously accepted, as being offered by Aaron, himself "holy to the Lord."