Beloved, the blood of bulls and goats were not enough to cleanse us from sin. When Adam and Eve sin in the Garden of Eden, God killed an animal to purify and cloth them from shame they have exposed themselves to due to sin. Beloved all through Abrahamic era, Mosaic era, and the prophets of old, they used the blood of bulls and goats, dove and turtle for the cleansing of sins and other offenses but none was good enough to endear them back to God.

God therefore sent His son to die. Jesus came willingly not compulsion as was recorded in Rev 5 and 6. Beloved, when the children of Israelite sinned in the wilderness on their way to the promise Land, God allowed them to be bitten by poisonous snakes. However, Moses cried unto God and God instructed him to make a fiery serpent and set it upon a standard: and it shall come to pass, that every one bitten, when he seeth it shall live.

Read more @ http://overcomers-faith.org/the-mighty-magnet/