Act 8:9 But there was a certain man called Simon, who previously practiced sorcery in the city and astonished the people of Samaria, claiming that he was someone great,
Act 8:10 to whom they all gave heed, from the least to the greatest, saying, “This man is the great power of God.”
Act 8:11 And they heeded him because he had astonished them with his sorceries for a long time.
Act 8:13 Then Simon himself also believed; and when he was baptized he continued with Philip, and was amazed, seeing the miracles and signs which were done.
Act 8:18 And when Simon saw that through the laying on of the apostles’ hands the Holy Spirit was given, he offered them money,
Act 8:19 saying, “Give me this power also, that anyone on whom I lay hands may receive the Holy Spirit.”
Act 8:20 But Peter said to him, “Your money perish with you, because you thought that the gift of God could be purchased with money!
Act 8:21 You have neither part nor portion in this matter, for your heart is not right in the sight of God.
Act 8:22 Repent therefore of this your wickedness, and pray God if perhaps the thought of your heart may be forgiven you.
If the heretic is speaking in public, it is proper and fitting to expose him in public. But of course I gave him the option in private first, so charity was there on my part, just not on his as he continues to rant and rave against those of us who take seriously and heed the words of our Messiah that pertain to Abraham and Moses.
23 For I see that you are full of bitterness and captive to sin.”
24 Then Simon answered, “Pray to the Lord for me so that nothing you have said may happen to me.”
You missed verses 23 and 24. Apparently Simon was cut enough in his heart that he responded with a request for prayer. Interesting though that he was not struck down dead the way Annanias and Sapphira were when they lied to Peter and the congregation and the Holy Spirit regarding the size of their money gift. I conclude that God in his grace saw some worth in keeping Simon around!