Like he who continues to deny the existence of HIV and engages in unprotected and reckless sexual conducts, regret will be his, if he is later tested HIV positive. But if he believes in God, repents and continues to obey His Commandments, his regret will be a trillions times smaller than he who denies the existence of God only to one day wake up to hear a voice announcing:
"Today, today is the day of regrets for both believers and non-believers alike".