you are not to be called ‘Rabbi,’ for you have one Teacher, and you are all brothers, and do not call anyone on earth ‘father,’ for you have one Father, and He is in heaven, nor are you to be called instructors, for you have one Instructor, the Messiah.
(Matthew 23:8-10)
As for those who were held in high esteem — whatever they were makes no difference to me; God does not show favoritism — they added nothing to my message.
(Galatians 2:6)