God gave specific instructions to master craftsmen on how to make garments to be warn by priests who performed sacred duties in the temple. The Bible tells how the thread was made that held the garments together.

Exodus 39:

39 The craftsmen made beautiful sacred garments of blue, purple, and scarlet cloth—clothing for Aaron to wear while ministering in the Holy Place, just as the Lord had commanded Moses.

2 Bezalel made the ephod of finely woven linen and embroidered it with gold and with blue, purple, and scarlet thread. 3 He made gold thread by hammering out thin sheets of gold and cutting it into fine strands. With great skill and care, he worked it into the fine linen with the blue, purple, and scarlet thread.