Números 4:6

6 Then they are to cover the curtain with a durable leather, Possibly the hides of large aquatic mammals; also in verses 8, 10, 11, 12, 14 and 25 spread a cloth of solid blue over that and put the poles in place.

6 Depois a cobrirão com couro, estenderão um pano inteiramente azul sobre ela e colocarão as varas no lugar.