وَإِذَا جَأوُوكُمْ قَالُوَاْ امَنَّا وَقَد دَّخَلُواْ بِالْكُفْرِ وَهُمْ قَدْ خَرَجُواْ بِهِWhen they come to you, they say, "We believe." But in fact they enter with (an intention of) disbelief and they go out with the same.This is the description of the hypocrites, for they pretend to be believers while their hearts hide Kufr.So Allah said; وَقَد دَّخَلُواْ (But in fact they enter) on you, O Muhammad, بِالْكُفْرِ (with disbelief) in their hearts and they depart with Kufr, and this is why they do not benefit from the knowledge they hear from you, nor does the advice and reminder move them. So, وَهُمْ قَدْ خَرَجُواْ بِهِ (and they go out with the same) meaning, they alone.وَاللّهُ أَعْلَمُ بِمَا كَانُواْ يَكْتُمُونَand Allah knows all that they were hiding.Allah knows their secrets and what their hearts conceal, even if they pretend otherwise with His creatures, thus pretending to be what they are not.Allah, Who has perfect knowledge of the seen and unseen, has more knowledge about the hypocrites than any of His creatures do and He will recompense them accordingly.Allah's statement