Ananias and Sapphira die
Ananias and Sapphira were struck dead for lying to the Holy Spirit about how much a piece of property was sold for.
Key passages
Ac 5:1–11

Now a certain man named Ananias, together with his wife Sapphira, sold a piece of property, and he kept back for himself some of the proceeds, and his wife was aware of it. And he brought a certain part and placed it at the feet of the apostles. …