"In your relationships with one another, have the same mindset as Christ Jesus: who, being in very nature God, did not consider equality with God something to be used to his own advantage; rather, he made himself nothing." (Philippians 2:5-7)
Paul appeals for unity grounded in humility: do nothing out of selfish ambition or vain conceit, but in humility value others above yourselves, looking not to your own interests but to the interests of others. The foundation is the greatest christological hymn in the New Testament, the Kenosis hymn: In your relationships with one another, have the same mindset as Christ Jesus: who, being in very nature God, did not consider equality with God something to be used to his own advantage; rather, he made himself nothing, taking the very nature of a servant, being made in human likeness. And being found in appearance as a man, he humbled himself by becoming obedient to death, even death on a cross. Therefore God exalted him to the highest place and gave him the name that is above every name, that at the name of Jesus every knee should bow in heaven and on earth and under the earth, and every tongue acknowledge that Jesus Christ is Lord, to the glory of God the Father.
The Catechism calls this the supreme expression of the Incarnation's logic: the eternal Son who possesses all divine dignity voluntarily emptied himself of its exercise in order to enter the human condition from the inside, becoming a slave and dying a criminal's death (CCC 461). And the exaltation that follows is not a reward for the humiliation but its natural consequence: the one who descended to the lowest point is raised to the highest precisely because of his descent.
Work out your salvation with fear and trembling, for it is God who works in you to will and to act in order to fulfil his good purpose. Do everything without grumbling or arguing, so that you may be blameless and pure, children of God without fault in a warped and crooked generation, shining like stars in the sky as you hold firmly to the word of life.
Brothers and sisters, the mind of Christ is the mind that looks not to its own interests. In every relationship today, in every meeting and conversation, ask: whose interests am I pursuing here, mine or theirs? The mind of Christ does not calculate what this costs. It made itself nothing. It became a servant. It went all the way to death on a cross. That is the standard. Begin somewhere on that road.
Lord Jesus, you emptied yourself and took the form of a servant. Give us your mind: humble, other-centred, obedient to the Father in all things. Let every knee bow at your name and every tongue confess that you are Lord. And work in us to will and to act according to your good purpose. Through Christ our Lord. Amen.