As you know, AIDS is a sickness that people spread among themselves. It is a calamity that is all over the world. Once the AIDS virus enters a person's body, it will never leave him. Those who have AIDS can spread it to their children. AIDS is a killer, destroying all who have it.
Sin is like that.
Sin is everywhere, in everyone, and causes people to perish forever. God Himself has provided a remedy, which, if we use it, will cleanse us from sin forever. Yes, on the same day that sin entered the world, God promised that He would send to the earth a holy Redeemer, who would redeem the children of Adam from the destructive power of Satan and sin. We also read that God announced that this Redeemer would be born uniquely of a virgin woman, because the Savior of sinners could not come from the descendants of Adam who were now contaminated by sin. He must come from the pure and holy Spirit of God.