“Ananias,” Peter asked, “why has Satan filled your heart to lie to the Holy Spirit and keep back part of the proceeds of the land?” (Acts 5:3)
You ever ask yourself, “what is the Holy Spirit?” Well, according to Scripture a better question is “who is the Holy Spirit?” The Scriptures bear witness to the fact that the Holy Spirit is not some mystical force but a person. This is made clear in the events of Acts 5.
In Acts 5:1-11, Luke records a story about a husband and wife named Ananias and Sapphira. At the time, believers were helping to meet the needs of others by selling their possessions and using that money to support those who had greater needs. This couple sold a piece of property but “kept back part of the proceeds.” Their sin was not in keeping their money, but in making it appear as if they were more generous than they actually were, but we learn about the Spirit in Acts 5:3.
In that passage, Peter says to Ananias, “why has Satan filled your heart to lie to the Holy Spirit and keep back part of the proceeds of the land?” Peter is pointing out that Ananias had sinned against the Holy Spirit, not an impersonal force, but a person. When we speak of the Holy Spirit, we are speaking about the third person of the Trinity. He is co-eternal and co-equal with both the Father and the Son (Gen. 1:1-2). He is the third person of the Trinity.