Philippians 2:3 is an interesting verse, but the last part of it is difficult (for me) to understand, and, at least as it is often translated, could easily be interpreted as paradoxical.
NIV: Do nothing out of selfish ambition or vain conceit, rather in humility value others above yourselves
ESV: ... count others more significant than yourselves
NASB: ...regard one another as more important than yourselves
KJB: ...let each esteem other better than themselves
Let us for the moment understand "regarding one as" as "believing one is". And let us suppose additionally that Paul is saying that humility consists in considering or believing another is more valuable, important, esteemed, and significant than oneself, and let us suppose that a Christian community should believe Philippians 2:3 and understand it in this way. Then here is a paradox: