Exodus 28:6

ועשו את האפד AND THEY SHALL MAKE THE EPHOD — If I set myself to explain the making of the ephod and the breast-plate in the order of the verses, the description of them would be fragmentary and the reader might err in piecing the details together: therefore I shall write down how they were made, just as each of them was, in order that “he who runs may read” (may have a comprehensive idea of them in their entirety), and afterwards I shall explain it in the order of the verses. The ephod was made like that kind of apron of women who ride on horse-back. He (the priest) tied it on behind him opposite (at the height of) his heart below his elbows. Its breadth was equal to the measure of a man’s back and somewhat more (cf. Rashi, end of v. 26), and it reached to his heels. The belt was attached to its top edge along the whole of its width, being of weaver’s work (i. e. woven in one piece with the ephod) and it extended on both sides beyond the width of the ephod in order that it might go right round the body and gird on the ephod by means of it. The shoulder-pieces were attached to the belt, one on the right and one the left, behind the priest, at the two ends of the width of the apron, and when they were lifted up they stood (we should say “they lay”) upon his two shoulders, so that they were like two straps made of the same material as the ephod itself, and sufficiently long to lift them up to reach to his neck on both sides, and they hung over in front of him a little below his shoulders. The onyx stones were fixed in them, one on his right shoulder and one on his left shoulder, and the settings were placed in their ends in front of his shoulders on his breast. Two cords of gold were inserted through two rings which were on the breastplate at the two ends of its upper width (edge), one on the right and one on the left, and the two ends of the chain (or cord) were fixed in the setting on the right, and similarly the two ends of the left chain were fixed in the setting which was on the left shoulder. Consequently, the breast-plate hung in front of him over his heart from the settings of the ephod. Further, there were two rings at the two ends of the breast-plate on its lower edge, and opposite them two rings below on the two shoulder pieces of the ephod on the lower edge of each where this was joined to the belt. The under two rings on the breast-plate were opposite the rings on the ephod, lying one upon the other, and they fastened them (each pair of rings) together by a blue purple thread which was inserted through the rings in the ephod and breast-plate, so that the lower edge of the breast-plate should lie close to the belt of the ephod and should not move about and come apart from it, swinging to and fro. זהב תכלת וארגמן תולעת שני ושש משזר OF GOLD, OF BLUE PURPLE, AND OF RED PURPLE, OF CRIMSON AND FINE TWISTED LINEN — The five materials were intertwined in every strand: they beat out the gold into the form of thin plates and from them they cut threads, and they wove that gold thread together with six threads of blue purple and a gold thread with six threads of red purple, and similarly with the crimson and similarly with the fine linen; because all the materials had their threads sixfold and there was a gold thread with each of them. Then they intertwined them all into one thread; it followed, therefore, that their thread was 28-fold. This is how it is explained in Treatise Yoma 72a and it is derived from the following verse: (Exodus 39:3) “And they beat out the gold into thin plates and cut it into threads to work the threads of gold in the blue purple and in the red purple, etc.” — this tells us that a gold thread was intertwined with each material. מעשה חשב THE WORK OF AN ARTIST — I have already explained (Exodus 26:1) that this was weaving on both sides: that is, that the designs on both sides were not similar one to the other.

And they shall make the efod of gold, of blue, and of purple, of scarlet, and fine twined linen, the work of an artist.

וְעָשׂ֖וּ אֶת־הָאֵפֹ֑ד זָ֠הָ֠ב תְּכֵ֨לֶת וְאַרְגָּמָ֜ן תּוֹלַ֧עַת שָׁנִ֛י וְשֵׁ֥שׁ מׇשְׁזָ֖ר מַעֲשֵׂ֥ה חֹשֵֽׁב׃