How to Live Over 120 Years and Remain Blessed, Healthy, Satisfied, and Strong! Did you know that God has promised you long life? Many Christians are mindful of that truth, but have no idea how many years are included in long life! It’s a startling fact that many Christians are completely unaware that they need not grow weak, frail, and decrepit as they grow older. What you believe in your early years will greatly affect your latter years.