Exodus 26:14

And thou shalt make a covering for the tent, a protecting curtain, of rams' skins dyed red, of a tawny color, and a covering above of badgers' skins, of leather made from the skins of some marine animal, probably of the sea-cow. These outer coverings served to shield the tent against wind and weather. Just as God made the Tabernacle His dwelling in the midst of His people in the Old Testament, so His presence is with us to this day in His Word and Sacraments.