﴿ قَالَ رَبِّ بِمَآ أَغْوَيْتَنِى لَأُزَيِّنَنَّ لَهُمْ فِى ٱلْأَرْضِ وَلَأُغْوِيَنَّهُمْ أَجْمَعِينَ ﴾

“[Whereupon Iblis] said: "O my Sustainer! Since Thou hast thwarted me, I shall indeed make [all that is evil] on earth seem goodly to them, and shall most certainly beguile them-into grievous error -”

Please check ayah 15:44 for complete tafsir.