The book of Acts is a favorite of preachers, so you are likely familiar with the showdown in Acts 8: 9-24 between Peter and Simon the Magician. Luke tells us that Simon had practiced his magic in a city in Samaia where he had been hailed as "God's Great Power." Simon heard the gospel preached by Philip and believed, but later, after Peter's arrival, he tried to purchase the power of the Holy Spirit from Peter. His name consequently has not been remembered for any great deeds, but for payment of money for church office ("simony"). But is that all to the story? Hardly. Don't look away now or you'll miss what's behind the curtain.
Let's look at how a first-century audience would have comprehended the episode in its Samaritan setting. That Simon was referred to by people of the Samaritan city as "God's Great Power" is significant. That title comes from the Samaritan Targum - an Aramaic translationm of the Samaritan Hebrew Biblle, known as the Samaritain Pentateuch. In the Samaritan Targum, the Hebrew word 'el ("God") is translated hela ("power"). God is then called "great"(rab). Not surprisingly, "the Great Power" was used in Samaritan hymns and writings as a substitute for the divine name, much in the same way orthodox Jews say ha-shem ("the Name"), instead of pronouncing the divine name Yahweh.
But how could the Samaritans speak of Simon as though he were God? Well. Simon was able to do amazing things. We aren't told if what he was doing was something he picked up through magical trickery or enablement from a demonic power, but the effect was the same. Second, the plural of "power" (helin) was also used by Samaritans of angels. Like many Jews and Christians, Samaritans considered one particular angel - the one in whom Yahweh's name dwelled (Exodus 23: 20-23) - as the embodied Yahweh. Since this angel was viewed as a manifestation of the true God - the "Great Power") - Simon's acts of magical pwoer had convinced many Smaritans that he, too, was a fleshly manifestation of God.
It's easy to see how Luke, writing in full knowledge of the incarnation of God in Christ, would have sought to use this encounter. The drama is palpable. Philip had take the message that God had become man in Jesus Christ to Samaria, where they alread had their own incarnate deity, Simon the Magician, "God's Great Power." Increddibly, Luke records that the power of the gospel broke through to Simon, moving him to embrace the message of Phlip. And when he saw the signs and miracles Philip performed, "Great Power" was drained. So much for that Hogwarts tuition!
From Luke's account, Simon must have realized very quickly that his own repertorie of tricks, however stunning to the masses, fell far short of what he had seen from Philip. Simon's conversion reads quite genuine. Luke is careful to note, though, that Simon saw the powerful deeds of Philip only after he beleived, when he began accompanying Philip in the city (Acts 8:13). But he hadn't seen anything yet.
Luke tells us that when the apostles at Jerusalem heard that the gospel had reached the Samaritans - a people hated by "pure" Jews for centuries (John 4:9) - they sent Peter and John not to investigate whether it was true, but to pray for the Samaritan believers that they might recieve the same Holy Spirit (Acts 8: 14-17) that had abided with them since the explosion of the gospel at Pentecost (Acts 2). This alone is a powerful message. Two Jewish men who had grown up with their own prejudices about the Samaritans didn't doubt that the grace of God included people they had scorned. Nothing Jesus promised was to be withheld from them.
Unfortunately, Simon had a lot to learn about the real Great Power. When Simon saw that the Samaritans upon whom Peter and John laid their hands had recieved the Holy Spirit (no doubt evidenced in some tangible, powerful way), he wanted to experience the power himself. That's understandable. But where he went wrong was trying to pay for it (Acts 8: 18-19). Peter rebuked him harshly, and Simon repented immediately (Acts 8: 20-24).
Nevertheless, Simon's name lives on in infamy. Because of his on-the spot repentence, not to mention the fact that he's probably only been a believer for at most a couple of weeks, it seems unreasonable to vilify Simon. In Simon, we have a man who was one day hailed as the incarnate God, but the next repented at the words of a couple of fishermen. We should remember the broken haer more than the misguided gesture!