וירקעו את פחי הזהב…לעשות בתוך התכלת ובתוך…(פקודי לט:ג)

All other tasks that were carried out for the Mishkan are not as detailed.  In this passuk however, the Torah tells us about the brilliant work that was involved in thinning, spinning and weaving the gold thread, an intricate activity that was never seen or heard of before – to be able to spin and weave gold, as if they were spinning and weaving thread composed of wool or flax.