And again in John’s revelations it is written that He was as a lamb slain from the foundation of the world. He is called a lamb of God typically speaking, because the offering a lamb in sacrifice upon the altar was a type of the crucifixion of the Savior, and the commandment of God given to the children of men in the beginning to build an altar and offer sacrifice with a lamb upon it, was typical of the Savior of the world. Hence came the term that He was the Lamb of God which the Father sent unto the world to be an offering for sin.