Joy of being of the same mind

So if there is any encouragement in Christ, any comfort from love, any participation in the Spirit, any affection and sympathy, complete my joy by being of the same mind, having the same love, being in full accord and of one mind. Philippians 2:1-2

The unity of the Philippian church was another source of joy for Paul. Like people everywhere, the church in Philippi would have contained different personalities, various educational backgrounds and upbringings, diverse opinions and perspectives, and different ethnic backgrounds.

We know only a few details about the church, but the little we know shows significant differences:
— Lydia, a rich, successful business woman and her household
— A former slave girl
— A jailer, his family and household
— Two women, Euodia and Syntyche, each with differing opinions
— Other brothers (​Acts 16:40)  

Trauma, loss, grief, and chaos magnify differences. This results in a destructive view in which differences are seen as a problem, as the enemy. The persecution the Philippians experienced would have magnified their differences as well. However, Paul rejoiced that they were "of the same mind.”

Why? They understood and applied Paul's teaching in 1 Corinthians 12:18-20. Everyone is needed for a group to thrive and be healthy.
But as it is, God arranged the members in the body, each one of them, as he chose. If all were a single member, where would the body be? As it is, there are many parts, yet one body.  1 Corinthians 12:18-20