﴿ جَنَّٰتُ عَدْنٍۢ يَدْخُلُونَهَا تَجْرِى مِن تَحْتِهَا ٱلْأَنْهَٰرُ ۖ لَهُمْ فِيهَا مَا يَشَآءُونَ ۚ كَذَٰلِكَ يَجْزِى ٱللَّهُ ٱلْمُتَّقِينَ ﴾

“Gardens of perpetual bliss will they enter - [gardens] through which running waters flow - having therein all that they might desire. Thus will God reward those who are conscious of Him-”

Gardens of Eden as a place of residence jannātu ‘Adnin is a subject the predicate of which is what follows which they will enter Gardens underneath which rivers flow wherein they shall have whatever they wish. So with such a reward God rewards the God-fearing