43:30
وَلَمَّا جَآءَهُمُ ٱلْحَقُّ قَالُوا۟ هَـٰذَا سِحْرٌۭ وَإِنَّا بِهِۦ كَـٰفِرُونَ ٣٠
Saheeh International
But when the truth came to them, they said, "This is magic, and indeed we are, concerning it, disbelievers."
Tafsir of "Ibn Kathir" (English)
And when the truth came to them, they said:"This is magic, and we disbelieve therein."means, they were arrogant and stubborn, and they pushed him away out of disbelief, envy and transgression.