What is God?

ٱللَّهُ

ٱللَّهُ نُورُ ٱلسَّمَـٰوَٲتِ وَٱلۡأَرۡضِ

۞ ٱللَّهُ نُورُ ٱلسَّمَـٰوَٲتِ وَٱلۡأَرۡضِ‌ۚ مَثَلُ نُورِهِۦ كَمِشۡكَوٰةٍ۬ فِيہَا مِصۡبَاحٌ‌ۖ ٱلۡمِصۡبَاحُ فِى زُجَاجَةٍ‌ۖ ٱلزُّجَاجَةُ كَأَنَّہَا كَوۡكَبٌ۬ دُرِّىٌّ۬ يُوقَدُ مِن شَجَرَةٍ۬ مُّبَـٰرَڪَةٍ۬ زَيۡتُونَةٍ۬ لَّا شَرۡقِيَّةٍ۬ وَلَا غَرۡبِيَّةٍ۬ يَكَادُ زَيۡتُہَا يُضِىٓءُ وَلَوۡ لَمۡ تَمۡسَسۡهُ نَارٌ۬‌ۚ نُّورٌ عَلَىٰ نُورٍ۬‌ۗ يَہۡدِى ٱللَّهُ لِنُورِهِۦ مَن يَشَآءُ‌ۚ وَيَضۡرِبُ ٱللَّهُ ٱلۡأَمۡثَـٰلَ لِلنَّاسِ‌ۗ وَٱللَّهُ بِكُلِّ شَىۡءٍ عَلِيمٌ۬ (٣٥)

Allah is the Light of the heavens and the earth. The similitude of His light is as a niche wherein is a lamp. The lamp is in a glass. The glass is as it were a shining star. (This lamp is) kindled from a blessed tree, an olive neither of the East nor of the West, whose oil would almost glow forth (of itself) though no fire touched it. Light upon light. Allah guideth unto His light whom He will. And Allah setteth forth for mankind similitudes, for Allah is Knower of all things. (35)

فِى بُيُوتٍ أَذِنَ ٱللَّهُ أَن تُرۡفَعَ وَيُذۡڪَرَ فِيہَا ٱسۡمُهُ ۥ يُسَبِّحُ لَهُ ۥ فِيہَا بِٱلۡغُدُوِّ وَٱلۡأَصَالِ (٣٦)

(This lamp is found) in houses which Allah hath allowed to be exalted and that His name shall be remembered therein. Therein do offer praise to Him at morning and evening. (36)