These sentences, spoken by Jesus, seem so simple to understand:
But Jesus called them to him and said, “You know that the rulers of the Gentiles lord it over them, and their great ones exercise authority over them. It shall not be so among you. But whoever would be great among you must be your servant, and whoever would be first among you must be your slave.” (Matthew 20:25-27 ESV)
So, why is this instruction by Jesus usually the first one to be set aside by the church?