The power of opening our homes and serving a meal is beyond what we usually consider. 

That day about three thousand took him at his word, were baptized and were signed up. They committed themselves to the teaching of the apostles, the life together, the common meal, and the prayers. Acts 2:41-42

They followed a daily discipline of worship in the Temple followed by meals at home, every meal a celebration, exuberant and joyful, as they praised God. People in general liked what they saw. Every day their number grew as God added those who were saved. Acts 2:46-47