Of the seven pieces of furniture in the tabernacle, the altar was the largest piece. It is called brazen or brass structure because it was coated with brass to withstand all the burnings. It was actually made from acacia wood.. The altar measured seven feet five inches squared, by four feet, five inches in height. The four top corners had a projections called the horns. This is where animals were tied for daily sacrifice. The word altar actually began with the Patriarchs: Noah, Abraham, Isaac and Jacob. They too built altars which were temporary and moveable. Its fire was not to be put out until all the sacrifices were burnt. The brazen altar points to Jesus as a lamb of sacrifice. The sacrifice on the cross was the final of sacrifices, making the brazen altar obsolete. Someone says that the brass represents the humanity of Jesus, but the gold in the holy place represents His Diety. It is not possible to get into the Holy Place without passing through the brazen altar. This speaks of our daily cleansing and repentance to access the rest of Gods provisions. The Priests who worked these altar were leaders in repentance and consecration. That’s what ministers are till today. The access to Gods secrets passes through willing repentance. Leaders must show examples of quick and deep repentance.
And thou shalt make an altar of shittim wood, five cubits long, and five cubits broad; the altar shall be foursquare: and the height thereof shall be three cubits. Exodus 27:1 KJV