“ If any man seems to himself to be a formal worshiper and yet does not bridle his tongue, but goes on deceiving his own heart, this man’s form of worship is futile. ”
يَقُولُ يَعْقُوبُ أَيْضًا :‏ « إِنْ ظَنَّ أَحَدٌ أَنَّهُ مُتَدَيِّنٌ وَهُوَ لَا يُلْجِمُ لِسَانَهُ ،‏ بَلْ يَخْدَعُ قَلْبَهُ ،‏ فَدِيَانَةُ هٰذَا بَاطِلَةٌ » .‏