Covering of the Inner Tabernacle
The Covering of the Inner Tabernacle was the most important. It was hand-woven from fine linen and three colors of yarn: scarlet, purple and blue.
The tabernacle also shalt thou make of ten curtains, of twisted linen thread, and blue, and purple, and scarlet yarn, with cherubim, of weaver’s work shalt thou make them. (Exodus 26:1-2 [Leeser])