Galatians 3:26 So in Christ Jesus you are all children of God through faith
We are not children of God by nature because we are sinful by nature; but we are children of God because of His Son Jesus Christ who came to earth to live and die as a human being amongst us and to be raised up after death to defeat our sinful nature once and for all.
The only problem for us is to believe this to be true and accept it in our hearts.
It is not an automatic birth right to get a free pass to heaven – we must make the choice to accept Jesus as our Saviour, to acknowledge what we have done wrong against God and to ask for forgiveness.