Ezekiel 43:18

Ezekiel 43:18 says, And he said unto me, Son of man, thus saith the Lord God; These are the ordinances of the altar in the day when they shall make it, to offer burnt offerings thereon, and to sprinkle blood thereon.  God then gave Ezekiel the ordnances or laws concerning the altar and the how sacrifices were to be presented on it.  Today, Jesus Christ is the altar that we offer ourselves on, and by God’s law it can only be done by putting our faith in Him.  

Verse nineteen adds, And thou shalt give to the priests the Levites that be of the seed of Zadok, which approach unto me, to minister unto me, saith the Lord God, a young bullock for a sin offering.  God specified that the Levites, the sons of Zadok, were the ones who could present the sin offering of a bull for the people.  Zadok was a direct descendent of Aaron, the first priest.  Today, all our sin offering is Jesus Christ, Who presented Himself as such.  To be forgiven of our sins, we must accept His sacrifice for them.  

Verse twenty continues, And thou shalt take of the blood thereof, and put it on the four horns of it, and on the four corners of the settle, and upon the border round about: thus shalt thou cleanse and purge it.  God then specified where the blood of the bullock was to be placed to purify the altar, and it was to cover the horns, the four corners at the bottom and the border.  This would be enough to purify the whole altar.  Jesus Christ’s shed blood is enough to purify all who put their faith in Him. 

Verse twenty-one concludes, Thou shalt take the bullock also of the sin offering, and he shall burn it in the appointed place of the house, without the sanctuary.   The bull itself was to be burned outside the sanctuary.  All this was to be done on the first day that the offering was brought.