“The first century Christians enjoyed a sense of closeness and unity that caused the world to sit up and take notice. It’s one thing to talk of loving others; it’s quite another to sell one’s valuable possessions and give the proceeds to those less fortunate. Yet that kind of generosity was common in the Early Church. And that kind of selflessness is the essence of true fellowship.”
Philip Comfort & Dan Lins in Life Application New Testament Commentary notes on Acts 2:42-47 (Wheaton: Tyndale House, 2001) 488.