Kabbalah zu Schemot 35:35

"And in the Egyptian's hand was a spear, like a weaver's beam" (Ibid.). It is, as the Scriptures say, "a weaver's beam," referring to the rod of Elohim, which was in his hand and upon which the Name pronounced in full was engraved by Betzalel and his Academy by the radiance of the letter combinations. And this is called "weaving," as is written, "Them has He filled with wisdom of heart...of the craftsman and of the embroiderer...and of the weaver" (Ex. 35:35). And the engraved Name shone from within this rod in all directions by the illumination of the wise men that engraved the ineffable Name pronounced in full in forty-two ways. The rest of the passage from here onward is similar to what he has already explained. Happy is his lot!