Religious titles were not used because Jesus had commanded his disciples: “Do not you be called Rabbi, for one is your teacher, whereas all you are brothers.
(‏ اعمال ١٥ :‏ ​ ٦ ،‏ ٢٣ -‏ ٣١‏ )‏ كما انه لم تُستعمَل الالقاب الدينية لأن يسوع امر اتباعه :‏ « لا تُدْعَوا رابِّي ،‏ لأن معلمكم واحد ،‏ وأنتم جميعا إخوة .‏