Now I understand what John Eldredge means. He is using parable, or fairy tale, or myth as a synonym for story. It is all a means of communicating Eternal Truth, the larger meaning, or transcendent truth which is larger than what we see in the physical world.
To break that down: Jesus parables were not always about real people or real situations. We listen and hear those parables not even considering whether the details He gave were fact or not. Jesus uses the details he gives us to make a point–usually a very powerful and sometimes life-changing point to those hearing Him.
Eldredge goes on to say that story brings you a glimpse of the eternal and that story awakens your heart to deeper truths in life. Rolland Hein says: “Myths are, first, stories: stories which confront us with something transcendent and eternal.”
So the parables of Scripture are the means Jesus used to get Eternal Truth into your heart. He is still in that business. He wants His deeper Eternal Truth, in your heart. He wants to give you and I meaning and purpose. The parables He told 2000 years ago on this planet were designed to do that throughout history. Those stories have transcendent truth and it does not matter whether they were written down on stone tablets or in a blog on the internet, they transmit eternal meaning to the hearer and the seer.