Altar of Incense

Twice a day, morning and afternoon, the priests would burn spices of incense on the altar.

And thou shalt make an altar to burn incense upon, of shittim wood shalt thou make it. A cubit shall be its length, and a cubit its breadth, foursquare shall it be; and two cubits shall be its height; from itself shall its horns be. And thou shalt overlay it with pure gold, its top, and its sides round about, and its horns; and thou shalt make unto it a crown of gold round about. (Exodus 30:1-3 [Leeser])