Matthew 18:1
"At the same time came the disciples unto Jesus, saying, Who is the greatest in the kingdom of heaven?"
Cross References (ranked by relevance)
Philippians 2:3
11
Let nothing be done through strife or vainglory; but in lowliness of mind let each esteem other better than themselves.
Matthew 23:11
But he that is greatest among you shall be your servant.
Romans 12:10
Be kindly affectioned one to another with brotherly love; in honour preferring one another;
Matthew 7:21
Not every one that saith unto me, Lord, Lord, shall enter into the kingdom of heaven; but he that doeth the will of my Father which is in heaven.