Surah Al-Hijr 15:39

قَالَ رَبِّ بِمَآ أَغْوَيْتَنِى لَأُزَيِّنَنَّ لَهُمْ فِى ٱلْأَرْضِ وَلَأُغْوِيَنَّهُمْ أَجْمَعِينَ

[Iblees] said, "My Lord, because You have put me in error, I will surely make [disobedience] attractive to them [i.e., mankind] on earth, and I will mislead them all

Translation: Saheeh International

Tafsir

Said he ‘My Lord because You have lead me astray bi-mā ‘because’ the bi- is for oaths the response for which is what follows I shall adorn for them evil acts acts of disobedience in the earth and I shall lead them astray all of them;

Excerpt from Tafsir al-Jalalayn, commentary on 15:39, via Quran.com. The reader has the full commentary and 9 more tafsirs.