'Double' in the Bible

They made all thy double boards of cypress-trees of Senir; they took cedars from Lebanon to make masts for thee.

And the double hooks of a hand breadth were fastened round about within; and upon the tables they put the flesh of the offering.

And it shall come to pass that every living thing which moveth, whithersoever the double river shall come, shall live. And there shall be a very great multitude of fish; for these waters shall come thither, and the waters of the sea shall be healed; and everything shall live whither the river cometh.