Word by Word Analysis

خَـٰلِدِينَ فِيهَا مَا دَامَتِ ٱلسَّمَـٰوَٰتُ وَٱلْأَرْضُ إِلَّا مَا شَآءَ رَبُّكَ ۚ إِنَّ رَبَّكَ فَعَّالٌ لِّمَا يُرِيدُ 107

[They will be] abiding therein as long as the heavens and the earth endure, except what your Lord should will. Indeed, your Lord is an effecter of what He intends.