Surah Al-Jathiyah 45:20

هَـٰذَا بَصَـٰٓئِرُ لِلنَّاسِ وَهُدًى وَرَحْمَةٌ لِّقَوْمٍ يُوقِنُونَ

This [Qur’ān] is enlightenment for mankind and guidance and mercy for a people who are certain [in faith].

Translation: Saheeh International

Tafsir

This Qur’ān is a set of insights for mankind guideposts with which they can discern God’s rulings and legal proscriptions and guidance and mercy for a people who have certainty with regard to the truth of the Resurrection.

Excerpt from Tafsir al-Jalalayn, commentary on 45:20, via Quran.com. The reader has the full commentary and 9 more tafsirs.