Acts 8:20

“But Peter said to him, etc.] With great abhorrence and indignation, resenting and detesting his proposal: thy money perish with thee; or “go into destruction with thee”; signifying, that he would not touch his money, or have anything to do with that or him either, in any such way: the words do not so much design an imprecation on his person, as an abhorrence of his sin; and rather show what his sin deserved than what he desired might be; for the apostle did not simply wish his damnation, since he afterwards exhorts him to repentance, and to pray for forgiveness; but threatens, and even predicts what would be his case, should he live and die in such a state, in which he appeared to be:…”

“Thy money perish with thee--that is, "Accursed be thou and thy money with thee." It is the language of mingled horror and indignation, not unlike our Lord's rebuke of Peter himself (Mat 16:23).”

“Thy money perish with thee - This is expressive of the horror and indignation of Peter at the base offer of Simon. It is not to be understood as an imprecation on Simon. The main idea is the apostle’s contempt for the “money,” as if he regarded it as of no value. “Let your money go to destruction. We abhor your impious offer. We can freely see “any” amount of money destroyed before we will be tempted to sell the gift of the Holy Spirit. But there was here also an expression of his belief that “Simon” also would perish. It was a declaration that he was hastening to ruin, and as if this was certain, Peter says, let your money perish “too.” The gift of God - That which he has “given,” or…”

“Thy: Act 1:18; Deu 7:26; Jos 7:24, Jos 7:25; Kg2 5:26, Kg2 5:27; Dan 5:17; Hab 2:9, Hab 2:10; Zac 5:4; Mat 27:3-5; Ti1 6:9; Jam 5:3; Pe2 2:14-17; Rev 18:15 thou: Act 8:22; Deu 15:9; Kg2 5:15, Kg2 5:16; Pro 15:26; Mat 15:19 the gift: Act 2:38, Act 10:45, Act 11:17; Mat 10:8 Acts 8:21”