God has explained his standards for our lives in the Bible. We admit that we have failed to meet them, and that we are unable to do anything to put things right. We have turned to God the Father in our need, and asked Him to forgive us and take away the punishment that we deserve.
According to His promise given in the Bible; because of His amazing love for man; and because Jesus took our punishment, God has forgiven our past rebellion against Him, and made us His children, taking us into His family and promising us life after death. He has changed our hearts, so that while at one time we lived as though God did not exist and did what we thought was right, now we strive to live our lives as He has commanded in the Bible, and as Jesus has showed us by His example.