The only one who wants man’s downfall and is an enemy to man is the devil. He is man’s real enemy who seeks to destroy us by any means necessary but unfortunately many do not see it this way.
Jesus said in John 10:10 “The thief comes to steal, kill and to destroy.” That is and has been His agenda, to steal the life Christ has for us, to kill destinies and destroy man utterly completely. John 3:8 also states why Jesus came, it says “for this purpose the Son of God was manifested, that He might destroy the works of the devil.” That is why during Jesus’ earthly ministry all He did was heal the sick, cast out demons, raise the dead, preach and teach the Kingdom of God and repentance. Anything contrary to this is the work of the devil. Sickness, demonic oppression, failure, stagnancy, bondage, etc all comes from the devil. Jesus furthermore stated that evil comes from the devil. (Mark 7:32-35, Luke 4:18-21, Mark 5:8, Acts 10:38).
Demonic powers exist and cause evil. In addition, man has a free will to cooperate with evil and disobey God’s instructions if he chooses.
Often man chooses to go against the ways of God, thereby stepping outside God’s protection.
Like previously stated, God has provided a means for man to be adopted into His family- and that is through Jesus Christ.
Jesus didn’t come into this world to condemn it, quite the contrary He came to save it. (John 3:17). God knows the good, the bad and the ugly we have all done because the intent of our hearts is fully exposed to Him. There is not one of us who is good enough to qualify for entrance into a place as perfect as heaven. (Romans 3:12)
We were born into sin. We inherit sin just as our personalities, traits and features are inherited from our parents. In addition to this, we commit sin every day, if not every hour so who can justify themselves in God’s sight if we are commanded to be perfect? No one.
So how can God solve the problem for man to co-exist with Him in heaven?