Translation for 34:20

وَلَقَدۡ صَدَّقَ عَلَيۡهِمۡ إِبۡلِيسُ ظَنَّهُۥ فَٱتَّبَعُوهُ إِلَّا فَرِيقٗا مِّنَ ٱلۡمُؤۡمِنِينَ ٢٠
Indeed, Iblîs’ assumption about them has come true,1 so they ˹all˺ follow him, except a group of ˹true˺ believers.

Foot notes

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 Iblîs was the name of Satan before his fall from grace (see footnote for 2:33). His assumption (or vow) was that he could easily mislead the majority of people (see 7:16-17, 15:39-40, and 38:82-83).