You might already know this, but I just got it over this weekend.
Adam had to sin in order for man’s relationship with God to be truly realized. I am not saying that God forced or caused Adam to sin, because I still believe we have the ability to decide how we react to any choices in our life. So why did sin have to be introduced to man?
God has always been around. No beginning and no ending. In Genesis 1:1, God created the heavens and the earth. In verse 2, we have God starting work on the earth, so the heavens and all in it were created first. That would suggest that before the earth was formed, the angels and any other heavenly being was created. We do not know when Lucifer led his rebellion and first sinned, but we know that He was a favorite of God and saw Him face to face.
Gen 1:26-27 Then God said, “Let us make man in our image, after our likeness. And let them have dominion over the fish of the sea and over the birds of the heavens and over the livestock and over all the earth and over every creeping thing that creeps on the earth.” (27) So God created man in his own image, in the image of God he created him; male and female he created them.
Here we have God saying that man will be created in “our” image. God here is the plural form: Elohiym or el-o-heem. For me, this goes to show the trinity, but others say it refers to the heavenly court. If no one else is in the court except God, so maybe I can agree with that =D. So man is to be created in our image then God creates man in His image. So we are created in God’s image but God is spirit as well and we are not, so that must mean we are made in His image in some other way. Paul talks about how we are made up of spirit, soul, and body in 1 Thessalonians 5:23. Man is created with three parts and there are three parts to God.
So Adam in his three parts is interacting with God in the garden. Adam gets to see God face to face as well. This might be pre-incarnate Jesus or it might be the father. Either way, it is God. God had said that if Adam ate the fruit of the tree of good and evil, he would surely die on that day. Adam didn’t die physically that day so what other options are left. The soul is the seat of emotions and Adam still had those, so his soul didn’t die. That leaves the spirit. The part of the man that knows God; 1 Corinthians 2:11. The spirit of man died when the fruit was eaten. This is a good thing though. In the long run at least.
While Adam walked with God, he was not united with God. There was no indwelling of God with Adam. That indwelling unites man to God on a whole new level that even the angels can not experience. That is why it is such a good thing that Adam sinned. We are no longer just with God, but now He is a part of us.