A common Christian expression is the admonition to ask Christ into your life or invite Jesus into your heart or similar terms which emphasize that salvation (full pardon for penalty of all sin) requires a personal decision.Just believing in God or Jesus is not enough.The Bible says belief must be coupled with a specific action step:Consciously invite him into your life ... confess your sins ... ask for forgiveness and salvation ... desire to turn from your sins ... and let him take control in daily living.This is what it means to become a Christian.This action step need be taken only once. Jesus called this new birth (John 3:1-18). Just as we have a time of physical birth, we have a time of spiritual birth, and we grow from there.Sin will become increasingly distasteful, but we are still human, and we will still sin from time to time.To maintain a close and happy relationship with God, we should confess known sins as they occur and increasingly turn over more control of our lives to him, explained in Daily living.
It's only within the last 60 years that science has acknowledged that the earth has NOT ALWAYS EXISTED but rather had a formless beginning from massive external power, just as the Bible has said all along.
It's highly unlikely that any writer three thousand years ago could know about the big bang without divine revelation from the designer/creator.
Scientific comfirmation increases confidence in the Bible and provides another REASON for Christian faith.