Overall meaning : The Almighty states that if He sends down a surah of the Qur’an to His Prophet, Muhammad, may Allah bless him and grant him peace, some among the hypocrites sarcastically say to others, ‘Which of you has this strengthened and increased his faith?’ He explains that the revealed surah does increase the believers’ faith beyond their former faith and gives them joy. As for those who have doubts and hypocrisy in their hearts, it only increases them in unbelief and doubts and they die unbelievers.
Do the hypocrites not see that they are tested every year once or twice?! Yet still they do not repent, nor do they take heed.
The Almighty then states that if He reveals a surah of the Qur’an divulging what the hypocrites attempt to hide, they look at each other, asking, ‘Is there anyone watching us who may inform Muhammad about what we say and thus he discovers ours secrets?’ Then they turn away from faith, stubbornly refuse to follow the surah’s teachings and be guided to the truth even though the Qur’an has informed them of their secrets. Allah has turned their hearts away from the truth because they are devoid of understanding due to their deliberate rejection of the truth.