Daniel was delivered from the lion's den because of his faith in God's power. Daniel refused to compromise his faith and continued to pray to God even after King Darius had issued a decree that anyone who prayed to any god or human except the king for the next 30 days would be thrown into the lion's den. When the king discovered that Daniel had defied his decree, he was deeply distressed and ordered for Daniel to be thrown into the lion's den. However, God miraculously shut the mouths of the lions, and Daniel was unharmed when he was brought out of the den the next morning. Thus, it was Daniel's faith in God's power and protection that saved him from the lions.