﴿ قُلْ أَتُعَلِّمُونَ ٱللَّهَ بِدِينِكُمْ وَٱللَّهُ يَعْلَمُ مَا فِى ٱلسَّمَٰوَٰتِ وَمَا فِى ٱلْأَرْضِ ۚ وَٱللَّهُ بِكُلِّ شَىْءٍ عَلِيمٌۭ ﴾

“Say: “Do you, perchance, [want to] inform God of [the nature of] your faith although God knows all that is in the heavens and all that is on earth? Indeed, God has full knowledge of every­thing!””

Say to them ‘Do you pretend to inform God about your religion read the doubled 2nd verbal form a-tu‘allimūna ‘do you inform’ in other words are you intimating to Him your religious status when you say ‘We believe’ when God knows all that is in the heavens and all that is in the earth and even though God is Knower of all things?’