When Adam and Eve chose the knowledge of good and evil and chose to listen to the liar and chose to disobey and distrust God and chose to do their own thing instead of what was right, they were making a choice to die spiritually because God had warned them that that is what would happen if they ate that fruit.
When they died spiritually, they were alienated from God. God could no longer be their Father, because they no longer had the spirit to obey him. They had a spirit to do their own thing and a spirit to listen to half truths and lies in order to justify what they wanted to do.
The Bible then records what happens to mankind when they make bad choices and it records how God in his mercy rescued mankind over and over. And then at just the right time, God sent Jesus to really save us. How? Jesus was born of a virgin by the Holy Spirit so that he could be spiritually alive just like Adam and Eve were before the fall. You see everything bears after its own kind so all people after Adam and Eve were born spiritually dead, up until Jesus.
God taught his Son, Jesus, all his precepts, teachings and promises in the Old Testament, opening up their meaning to him. Jesus learned to walk by the spirit and not by the flesh, as Adam and Eve had done. He walked the walk and talked the talk. He always obeyed the Father. He refused to listen to reasoning that would justify his own desires.
When he had accomplished the mission of overcoming sin, he further obeyed his Father and offered himself as the sinless offering for all of mankind. Why did he have to do that? He was taking our place so that we could take his. He had to choose to give up his life because Adam and Eve had chosen to have their own life apart from God. (Mankind soon learned that life without God [light, life, love] is death.) Jesus had to bear our sins and sicknesses so that we wouldnít have to. And he had to counter everything that Adam and Eve chose in order to restore. They chose self; he chose righteousness. They listened to the liar; he listened to God. They did their own thing; he did Godís bidding. They sinned; he committed the greatest act of Agape Love. They gave the kingdom over to Satan by submitting to him and Jesus took the kingdom back by ruling over all temptation and keeping God on the throne of his heart, never listening to the liar (Satan). The kingdom belongs to him and heís coming back to rule very soon.
He had to die in order to provide a way for mankindís carnal nature to be crucified. Remember, Adam and Eve had given their carnal or flesh nature ascendancy, i.e. power. Jesus had to deny the carnal nature entirely and to the uttermost in order to diffuse it. Thatís Godís plan of redemption. . . He restores our choice. He washes away our sin in the blood of the pure lamb, Jesus. Who can argue with such a powerful cleansing agent as pure blood shed for mankind? Through Jesus, God restores those who choose him, choose life, choose righteousness, back to spiritual life. In order to have your soul saved, you must put on the Lord Jesus Christ and learn to walk by the spirit and not by the flesh. (Learn to do what God teaches even when your lower nature abhors it.) Romans 6-8, Matthew 22:9-14, Romans 13:14
Go for it! You need Jesus!
Ask him to save you, right now. Ask God to forgive you for sinning. Ask Jesus to come into your heart and rule and reign there. Heíll give you a new nature. Get a Bible and study to show yourself approved. Be a hearer and a doer of the Word. Remember, everything we receive from God is by faith.