Just as several sons are born to a parent, but all are not virtuous to the same extent.
Just as there are several students in a school, but all of them are not proficient in understanding a subject to the same extent.
Just as several passengers travel in a boat, but all of them have different destinations. Everyone goes his own way 00 leaving the boat.
Similarly, several Sikhs of different aptitude take refuge of the True Guru, but the cause of all causes--the capable True Guru makes them alike by bestowing on them the elixir of Naam. (583)