What I believe, Part 2

See part 1 here

There is something deeply wrong with every man.
In His revelation, God records man's original defiance of his Creator. This disobedience brought three main consequences: a cursed creation, physical death, and spiritual death. The curse on creation meant that man was no longer in harmony with his surroundings. Physical death meant that man would begin aging and someday die physically. Spiritual death meant that man's close relationship with his Creator was destroyed. God separates himself from anything that is contaminated or contrary to His character, and this now included the most precious of His own creatures.

Why? Read Genesis 3

God desires fellowship with man so much that He was willing to make the ultimate sacrifice to restore this fellowship.
Since the beginning of mankind, all men have inherited a fallen nature from their parents. This means that all men are pre-disposed to rebellion against their Creator. In God's eyes, the only just punishment for such rebellion is physical and spiritual death. But God loves man so much that He crafted a plan to satisfy the punishment for our rebellion and at the same time restore our fellowship with Him. He would send His Son (one of the three persons of the God-head) to take the form of a human. He lived a perfect life and yet was sentenced to die by the ruling government at the time. In an act that only God Himself fully understands, God effectively placed the sins of man on His own Son. This resulted in His Son's death and separation from His Father.

Why? The Bible is loaded with pictures, analogies, and explanations of this truth. Read the book of Romans for a start.