Tawhid (monotheism) as rational necessity

وَلَئِن سَأَلْتَهُم مَّنْ خَلَقَ ٱلسَّمَـٰوَٰتِ وَٱلْأَرْضَ وَسَخَّرَ ٱلشَّمْسَ وَٱلْقَمَرَ لَيَقُولُنَّ ٱللَّهُ ۖ فَأَنَّىٰ يُؤْفَكُونَ

If you asked them, "Who created the heavens and earth and subjected the sun and the moon?" they would surely say, "Allāh." Then how are they deluded?