The chief objection that modernists have with the story of the Feeding of the 5,000 was answered by St. Augustine over 1500 years ago.  Augustine said, "Miracles are not contrary to nature, but only contrary to what we KNOW about nature." The miracle here was that a weary but compassionate Jesus understood the true power of the Creator God – the Father of the universe. And He acted in accordance with that knowledge: with miraculous results.