Houston, who met Graham through the men's group at St. John Neumann Catholic Church, was poorly educated and illiterate, but understood the Gospel like no one Graham had ever met.
Houston had experienced chronic homelessness throughout his life, and became a key tour guide for Graham and his crew, who were "clueless" about life on the streets as they began their ministry.
During one meeting, the group had discussed how great it would be if they could get phone cards (pre-cellphone times) to hand out to the homeless whom they would meet.
"Houston looked at us and said, 'That is the dumbest idea on the face of the planet. They don't need phone cards. No one wants to talk to them. They don't want to talk to anybody. You need to put socks on that truck,'" Graham recalled.
To this day, socks are the most desired item on the trucks.
Houston also took Graham out to his "conference room" - to meet some of the homeless who were his friends. It changed Graham's whole perspective on the population he was about to serve.
Not long after Mobile Loaves and Fishes began, Houston was diagnosed with bladder cancer and given mere weeks to live.
For his dying wish, Houston didn't want to travel or eat a fancy steak dinner – he wanted to deliver 400 popsicles to homeless children on a hot summer day, a treat those kids rarely experienced.
"He wanted them to choose: Pink? Red? Blue? Purple? Green? He wanted to give that which they did not need but might want. He wanted to give them abundance in fruity, tasty, frozen form," Graham wrote.
That philosophy carried over to the food trucks. The people they serve are given options - PB&J, ham and cheese, tacos? Milk, coffee, orange juice? Oranges or apples? It's a shift from the scarcity mentality found in soup kitchens founded in the Great Depression, to an abundance mentality that is possible in the most abundant country in the world, Graham explained. They are "the little bitty choices that people who live a life in extreme poverty don't get to make often."
The solution to homelessness is not just housing
(Story continues below)
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Since the first truck run, the ministry quickly grew. Hungry people would chase down the food trucks as they saw them making their way through the streets of Austin.
By early 2017, the ministry had expanded to the cities of San Antonio, Texas; Providence, Rhode Island; New Bedford, Massachusetts; and Minneapolis, Minnesota. To date, Mobile Loaves & Fishes has served well over 4 million meals, and with more than 18,000 volunteers, it is the largest prepared feeding program to the homeless and working poor in Austin.
But it didn't stop there. A little over five years into the ministry, Graham envisioned an "RV park on steroids", with the philosophy of "housing first", which holds that the homeless need housing before they can solve any of their other problems.
However, Graham knew that mere houses were not enough. What these people need and desire, like everyone, is to be known and loved – they needed community. He envisioned a place where people lived life together, knew and cared for each other, sharing kitchens and gardens and conversation.
"It developed from this idea back in 2004, where we went out and bought a gently used RV and lifted one guy off the streets into a privately owned RV park," he said.
Because of zoning laws and other issues, it took awhile to get the idea off the ground, but the Community First! Village project was finally able to break ground in 2014.