Surah An Naml 27: Verse 4 إِنَّ الَّذِينَ لَا يُؤْمِنُونَ بِالْآخِرَةِ زَيَّنَّا لَهُمْ أَعْمَالَهُمْ فَهُمْ يَعْمَهُونَ Verily, those who believe not in the Hereafter, We have made their deeds fair-seeming to them, so they wander about blindly
Surah An Naml 27: Verse 24 وَزَيَّنَ لَهُمُ الشَّيْطَانُ أَعْمَالَهُمْ فَصَدَّهُمْ عَنِ السَّبِيلِ فَهُمْ لَا يَهْتَدُونَ … and Shaytan has made their deeds fair-seeming to them, and has barred them from (Allah’s) way, so they have no guidance.
Allah (swt) defines what is harmful and what is harmless for us
Surah Al Mulk 67: Verse 14 أَلَا يَعْلَمُ مَنْ خَلَقَ وَهُوَ اللَّطِيفُ الْخَبِيرُ Should not He Who has created know? And He is the Most Kind and Courteous (to His slaves), All Aware (of everything) (Surah Al Mulk 67: Verse 14)
Surah Al A’raf 7: Verse 22 "Your Lord has only forbidden you this tree lest you should become angels or immortals, and he swore to them saying: Surely, I am a sincere counselor unto you. So he beguiled them by deceit."
Satan’s promise Surah Al A’raf 7: Verses 14 -18 “SATAN (Iblis) said: Give me respite till the Resurrection Day. The Almighty said: Be you among those who are given respite. He said: I will certainly lie in wait for them on Your Straight Path. Then I will assault them from before them and behind them, from their right and from their left, not will You find most of them grateful."