Exodus 27:16-20

And for the gate of the courtyard there shall be a curtain of twenty cubits, of violet, purple, and scarlet material and fine twisted linen, the work of a weaver, with their four pillars and their four bases.

All the pillars around the courtyard shall be joined together with silver, with their hooks of silver and their bases of bronze.

The length of the courtyard shall be a hundred cubits, and the width fifty throughout, and the height five cubits of fine twisted linen, and their bases of bronze.

All the utensils of the tabernacle used in all its service, and all its pegs, and all the pegs of the courtyard, shall be of bronze.

“And you shall command the sons of Israel that they bring you clear oil of beaten olives for the light, to make a lamp burn continually.