Exodus 25:8 (KJV)

And this is the offering which ye shall take of them; gold, and silver, and brass,

And blue, and purple, and scarlet, and fine linen, and goats' hair,

And rams' skins dyed red, and badgers' skins, and shittim wood,

Oil for the light, spices for anointing oil, and for sweet incense,

Onyx stones, and stones to be set in the ephod, and in the breastplate.

According to all that I shew thee, after the pattern of the tabernacle, and the pattern of all the instruments thereof, even so shall ye make it.

And they shall make an ark of shittim wood: two cubits and a half shall be the length thereof, and a cubit and a half the breadth thereof, and a cubit and a half the height thereof.

And thou shalt overlay it with pure gold, within and without shalt thou overlay it, and shalt make upon it a crown of gold round about.

And thou shalt cast four rings of gold for it, and put them in the four corners thereof; and two rings shall be in the one side of it, and two rings in the other side of it.

And thou shalt make staves of shittim wood, and overlay them with gold.