Exodus 26:2

1“Moreover you shall make the tabernacle with ten curtains of fine twined linen, and blue, and purple, and scarlet, with cherubim. You shall make them with the work of a skillful workman.

2The length of each curtain shall be twenty-eight cubits, and the width of each curtain four cubits: all the curtains shall have one measure.

3Five curtains shall be coupled together to one another, and the other five curtains shall be coupled to one another.

4You shall make loops of blue on the edge of the one curtain from the edge in the coupling, and you shall do likewise on the edge of the curtain that is outermost in the second coupling.