We need to make sure that we are clear that this sharing of goods (and the selling of property to give the proceeds to the Church) was expected behavior, but it was not required. Peter makes this clear in 5:4.
Sapphira had full knowledge of what Ananias was about to do. They colluded with each other, and both suffered the same consequence of the lie. While not the source of it, they are a prime example of the old saying, “One lies, and the other swears to it.”
Peter’s assertion that they had lied not “to men, but to God” (5:4) shows that the early believers held the Apostles in extremely high regard. As the heads of the Church, they were truly Christ-in-the-flesh.
The story of Sapphira and Ananias raises more questions than it answers:
How do Twenty-First Century Christians react to the idea of holding all things (money and property included) in common as a community? The concept can be especially difficult for those of us who are middle-class and up.
What motivated their lie? Were they perhaps hoping to have both the praise of the community, as well as some of their own money? But why lie, if the sharing of goods and gifts was entirely voluntary?