16 The hearth is square, 21 feet long by 21 feet wide.
17 The ledge is 24 1/2 feet long by 24 1/2 feet wide, with four equal sides. The rim all around it is 10 1/2 inches, and its gutter is 21 inches all around it. The altar’s steps face east.”
18 Then He said to me: “Son of man, this is what the Lord God says: These are the statutes for the altar on the day it is constructed, so that burnt offerings may be sacrificed on it and blood may be sprinkled on it:
19 You are to give a bull from the herd as a sin offering to the Levitical priests who are from the offspring of Zadok, who approach Me in order to serve Me.” This is the declaration of the Lord God.
20 “You must take some of its blood and apply it to the four horns of the altar, the four corners of the ledge, and all around the rim. In this way you will purify the altar and make atonement for it.
21 Then you must take away the bull for the sin offering, and it must be burned outside the sanctuary in the place appointed for the temple.
22 “On the second day you are to present an unblemished male goat as a sin offering. They will purify the altar just as they did with the bull.