Surah Ar-Rum 30:34

لِيَكْفُرُوا۟ بِمَآ ءَاتَيْنَـٰهُمْ ۚ فَتَمَتَّعُوا۟ فَسَوْفَ تَعْلَمُونَ

So that they will deny what We have granted them. Then enjoy yourselves, for you are going to know.

Translation: Saheeh International

Tafsir

Let them be ungrateful for what We have given them this is an imperative meant as a threat. ‘So take your enjoyment. Soon you will know’ the consequences of your enjoyment there is a shift away from the third person address to the second.

Excerpt from Tafsir al-Jalalayn, commentary on 30:34, via Quran.com. The reader has the full commentary and 9 more tafsirs.