"Say, are the blind equal to the seeing?"—meaning: the one who does not see, and the one who sees; this is an analogy for the believer and the disbeliever. "Will you not then reflect?"—meaning: that they are not equal.
﴿قل هَل يَسْتَوِي الْأَعْمَى﴾ يَعْنِي: الَّذِي لَا يُبْصِرُ ﴿وَالْبَصِيرُ﴾ الَّذِي يُبْصِرُ؛ هَذَا مَثَلُ الْمُؤْمِنِ وَالْكَافِر ﴿أَفلا تتفكرون﴾ أَي: أَنَّهُمَا لَا يستويان.