The horns of the alter Exo 27:2 And thou shalt make the horns of it upon the four corners thereof: his horns shall be of the same: and thou shalt overlay it with brass. God gave Moses exact plans and specifications to build the Tabernacle and this place of sacrifice, worship and service was a picture, type and shadow of Christ sacrifice as the Lamb of God . Any other way to approach God was met with one judgment and that was death. Strange fire was also punished by death. Only the fire of God's own judgment was acceptable and any other attempt to substitute man's effort resulted in- you guessed it death. The Tabernacle as already discussed was plainly demonstrating Christ as the only way to God and that fact holds true today. The first step into the Tabernacle was the brazen alter. Bronze or brass always signified judgment and here the sacrifice must be placed. The blood was spilled and the fire of God's alter would consume the flesh. Freshly killed the nerves in this sacrifice would sometimes cause the flesh to convulse as it hit the searing heat and thus the horns. The sacrifice could literally be tied to the alter to keep it from flopping off much as our flesh tries to do even today. Only two metals would ever come in contact with the flesh- brass (judgment) and/ or silver (redemption).