Luke 9:1-3

Then he called his twelve disciples together, and gave them power and authority over all devils, and to cure diseases. And he sent them to preach the kingdom of God, and to heal the sick. And he said unto them, Take nothing for your journey, neither staves, nor scrip, neither bread, neither money; neither have two coats apiece.

When we go out teaching to the word of God we are supposed to depend on the people that we see for our survival. We try to stay at the houses of the people, we eat with them and we teach them. This allows God to use us in all manors in spreading his word. It is all a blessing to those that help the workers of God.