Exodus 25:10-16

“Have them make an ark of acacia wood—two and a half cubits long, a cubit and a half wide, and a cubit and a half high. Overlay it with pure gold, both inside and out, and make a gold molding around it. Cast four gold rings for it and fasten them to its four feet, with two rings on one side and two rings on the other. Then make poles of acacia wood and overlay them with gold. Insert the poles into the rings on the sides of the ark to carry it. The poles are to remain in the rings of this ark; they are not to be removed. Then put in the ark the tablets of the covenant law, which I will give you.