Arcana Coelestia #9858
9858. 'With the work of a designer' means a product of the understanding. This is clear from the meaning of 'a designer' as the power of understanding, dealt with in 9598, 9688. The words 'a product of the understanding' are used because the Lord's spiritual kingdom, which is represented by Aaron's garments, is heaven's power of understanding, even as His celestial kingdom is its power of will. And the powers of understanding and will that a human being has correspond to those heavens, see 9835.
Jeremiah 33:15
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In those days, and at that time, will I cause a Branch of righteousness to grow up to David; and he shall execute justice and righteousness in the land.