The Qur'an is Guidance and Glad Tidings for the Believers, a Warning to the Disbelievers, and it is from Allah

In (the comments on) Surat Al-Baqarah, we discussed the letters which appear at the beginning of some Surahs.

تِلْكَ ءَايَـتُ الْقُرْءَانِ وَكِتَـبٍ مُّبِينٍ

Commentary

زَيَّنَّا لَهُمْ أَعْمَالَهُمْ (We have made their deeds adorned in their sight - 27:4)It means that those who do not believe in the Hereafter We have made their bad actions look adorned in their sight. Therefore they feel good about them and remain enthralled in depravity. Some commentators have interpreted that "their deeds" is used in this verse for good deeds. Hence meaning of the verse is that Allah had placed the good deeds before them with all their attractions. But those unjust people did not pay any attention to them, rather they remained engrossed in infidelity; hence lost their way in wilderness.