The story of Daniel in the lions' den is found in chapter six of the Book of Daniel in the Bible. Daniel is an official in the Persian empire under King Darius. Darius had made a decree that no one was to offer prayer to any god or man except him for a period of thirty days. Daniel continued to pray as was his habit, knowing that praying would have him killed. For this action, his friend Darius sadly had him arrested and thrown into a lions' den. However, he was unharmed, and after he was released the following morning, the people who had cajoled the king into making the decree were thrown into the lions' den themselves.
In the book of Revelation 5:5 there is a reference the Lion of Judah being Jesus Christ. The artist makes a connection between the two Biblical events implying that Daniel's protector in the lions' den might have been Jesus. Can you see the face of Christ in the Lion?