Matthew Henry on Exodus 28:15-30
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. This was fastened to the ephod with wreathen chains of gold (Exo 28:13, Exo 28:14, Exo 28:22, etc.) both at top and bottom, so that the breast-plate might not be loosed from the ephod, Exo 28:28. The ephod was the garment of service; the breast-plate of judgment was an emblem of honour: these two must by no means be separated. If any man will minister unto the Lord, and do his will, he shall know his doctrine. In this breast-plate,
I. The tribes of Israel…
Read the whole note in the consoleJamieson-Fausset-Brown on Exodus 28:15
thou shalt make the breastplate of judgment with cunning work--a very splendid and richly embroidered piece of brocade, a span square, and doubled, to enable it the better to bear the weight of the precious stones in it. There were twelve different stones, containing each the name of a tribe, and arranged in four rows, three in each. The Israelites had acquired a knowledge of the lapidary's art in Egypt, and the amount of their skill in cutting, polishing, and setting precious stones, may be judged of by the diamond forming one of the engraved ornaments on this breastplate. A ring was attached to each corner, through which the golden chains were passed to fasten this brilliant piece of jewel…
Read the whole note in the consoleAdam Clarke on Exodus 28:16
Four-square it shall be - Here we have the exact dimensions of this breastplate, or more properly breast-piece or stomacher. It was a span in length and breadth when doubled, and consequently two spans long one way before it was doubled. Between these doublings, it is supposed, the Urim and Thummim were placed. See Clarke on Exo 28:30 (note).
John Gill on Exodus 28:16
Four square it shall be, being doubled,.... That is, when it was doubled; for the length of it, according to Maimonides (c), was a cubit, which is two spans, and so, when it was doubled, was but one, and its length and breadth being alike, as follows:
a span shall be the length thereof, and a span shall be the breadth thereof; a square, which is the measure, the form of the new Jerusalem, the church of Christ, Revelation 21:16 and may denote the perfection, firmness, and immovableness of it, Psalm 125:1. Some have thought that this breastplate was doubled, in order to have something enclosed in it: some imagine, that within this fold were put the Urim and Thummim, which they suppose to be t…