Exo 26:9 You shall couple five curtains by themselves, and six curtains by themselves, and the sixth curtain you shall double over at the front of the tent.
Exo 28:16 It shall be square and doubled, a span its length and a span its breadth.
Exo 39:9 It was square. They made the breastpiece doubled, a span its length and a span its breadth when doubled.

Eze 21:14 “As for you, son of man, prophesy. Clap your hands and let the sword come down twice, yes, three times, the sword for those to be slain. It is the sword for the great slaughter, which surrounds them,
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