Sometimes people feel that God cannot save them because of what they have done. But the story of Nebuchadnezzar ought to encourage every one that God can save people in spite of their past experiences. Grace is the unmerited favor of God. It comes as a free gift through faith in Jesus. The of God.
Salvation is free.
People cannot earn it or work for it. They can only accept it. The word 'believe' means to have implicit trust, confidence, and faith in Jesus. It is not referring to mere intellectual assent. People must, like Nebuchadnezzar, allow God to fully control their lives.