AL BAQARAH — Ayat 257
اللّهُ وَلِيُّ الَّذِينَ آمَنُواْ يُخْرِجُهُم مِّنَ الظُّلُمَاتِ إِلَى النُّوُرِ وَالَّذِينَ كَفَرُواْ أَوْلِيَآؤُهُمُ الطَّاغُوتُ يُخْرِجُونَهُم مِّنَ النُّورِ إِلَى الظُّلُمَاتِ أُوْلَـئِكَ أَصْحَابُ النَّارِ هُمْ فِيهَا خَالِدُونَ
Allah is the ally of those who believe. He brings them out from darknesses into the light. And those who disbelieve - their allies are Taghut. They take them out of the light into darknesses. Those are the companions of the Fire; they will abide eternally therein.
Tafsir Ibnu Katsir
اللَّهُ وَلِيُّ الَّذِينَ ءامَنُواْ يُخْرِجُهُم مِّنَ الظُّلُمَـتِ إِلَى النُّورِ وَالَّذِينَ كَفَرُواْ أَوْلِيَآؤُهُمُ الطَّـغُوتُ يُخْرِجُونَهُم مِّنَ النُّورِ إِلَى الظُّلُمَـتِ أُوْلَـئِكَ أَصْحَـبُ النَّارِ هُمْ فِيهَا خَـلِدُونَ
257. Allah is the Wali (Protector or Guardian) of those who believe. He brings them out from darknesses into light. But as for those who disbelieve, their Awliya' (supporters and helpers) are Taghut (false deities and false leaders), they bring them out from light into darknesses. Those are the dwellers of the Fire, and they will abide therein forever. Allah stated that whoever follows what pleases Him, He will guide him to the paths of peace, that is Islam, or Paradise. Verily, Allah delivers His believing servants from the darkness of disbelief, doubt and hesitation, to the light of the plain, clear, explained, easy and unequivocal truth. He also stated that Shaytan is the supporter of the disbelievers who beautifies the paths of ignorance and misguidance that they follow, thus causing them to deviate from the true path into disbelief and wickedness.