For two thousand years people have studied the first century church to learn why they grew so dramatically and changed their society so thoroughly. Much of the answer lies in this verse.
What they did, they did daily. Consistency, over time, can change the world. Their faith was not occasional or sporadic. You could count on it. What they did was done in unity. The church had a common purpose because it had a common Lord. Their witness was not fractured through division and lack of cooperation. Because the early Christians spent so much time seeking the Lord together, they tended to have the same heart. They also spent time together in each other’s homes. They cared about each other and enjoyed each other’s company. Church was fun! That is why they had gladness of heart. These people didn’t have to be coerced into attending services or meeting together. They wanted to. Finally, they had a simplicity of heart. They kept it simple! They didn’t play games or wear masks. They loved God and they loved one another. The results were astounding.
The key to the Christian life is much like sports: keep it simple. Don’t neglect the fundamentals. Be consistent. Is there anything more important than living your Christian life, well?