So not all men are children of God as some would say. We have to be adopted into God's family as sons. This happens through repentance and faith in God . We are sons of God through faith in Christ Jesus. Those without faith in Christ Jesus therefore are not sons of God.
Fallen mankind are under the curse .
It took Jesus Christ Himself to save man out of this mess. Adam had received dominion from God in the garden but when he obeyed satan he gave this authority to rule over the affairs of earth in large measure to satan. Satan became his god. This is why the world is in such a mess today - because people are still believing the devil's lies instead of God's word. Instead of receiving the promised enlightenment, Adam and Eve became spiritually blind and cut off from God.