"You know that the rulers of the Gentiles lord it over them, and their high officials exercise authority over them. Not so with you. Instead, whoever wants to become great among you must be your servant, and whoever wants to be first must be your slave." Matthew 20:25-27 (similarly Mark 10:42-43 and Luke 22:25-26)
"But you are not to be called 'Rabbi,' for you have only one Master 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 'teacher,' for you have one Teacher, the Christ. The greatest among you will be your servant. For whoever exalts himself will be humbled, and whoever humbles himself will be exalted." Matthew 23:8-12
Why isn't a strict literal interpretation customarily applied to these passages?