Exodus 27:21

27:21 In the tent of meeting outside the curtain that is before the testimony, Aaron and his sons are to arrange it from evening to morning before the Lord. This is to be a lasting ordinance among the Israelites for generations to come.

Exodus 38:18

38:18 The curtain for the gate of the courtyard was of blue, purple, and scarlet yarn and fine twisted linen, the work of an embroiderer. It was thirty feet long, and like the hangings in the courtyard, it was seven and a half feet high,