Thy money perish with thee; a formal execration or curse, not only on his money, but also upon Simon himself; but always to be conditional, viz. unless he repented. Thou hast thought: our hearts are to be watched over; our thoughts may be exceeding sinful, as here, which made his words or desires to be so ill taken.
Related Commentaries of Acts 8:20
Acts 8:20
20 But Peter said unto him, Thy money perish with thee, because thou hast thought that the gift of God may be purchased with money.