It’s into this vain striving that something beautiful has occurred. In the beginning God had made the world, and he loved it. That didn’t change when it fell. Actually, as soon as Adam and Eve had sinned, God did two very amazing things. First, he cursed Satan, who had been the one who tempted God’s precious children. Secondly, he promised that though Adam and Eve had to live with the effects of their sins, he would give them an heir that would defeat Satan (i.e. The effects of sin).
The rest of the Bible is dedicated to that heir, to that descendent, who would come to defeat Satan. The promise was fulfilled when Jesus was born.
Jesus is the only Son of God. Though he was born, he was not created. He is 100% God and 100% man. This identity makes him, and only him the one who can fix the problem of sin and death. Jesus came to earth to live a life like ours and then to be the ultimate sacrifice. On the cross, Jesus took all of our sins and failures, all of our death and decay and wrapped it up in his perfect life. The One who never sinned, became sin.