to (or even worse than) the strange fire of Nadab and Abihu. They are an affront to the Holy Spirit, and therefore to God Himself—grounds for severe judgment (cf. Heb. 10:31).1 When the Pharisees attributed the Spirit’s work to Satan (Matt. 12:24), the Lord warned them that such hard-hearted blasphemy was unforgivable. Ananias and Sapphira were instantly struck dead after lying to the Holy Spirit. As a result, “great fear came upon all the church and upon all who heard these things” (Acts 5:11).