Saying the right things without doing the right things would make one a hypocrite. Paul was well - acquainted with the hypocrisy of the Pharisees and the damaging result of their course.
فَقَدْ كَتَبَ بُولُسُ فِي رِسَالَتِهِ ٱلثَّانِيَةِ إِلَيْهِ :‏ « أَنَا أَتَذَكَّرُ ٱلْإِيمَانَ ٱلْعَدِيمَ ٱلرِّيَاءِ ٱلَّذِي فِيكَ » .‏