This seems to be an almost universal call or wish. Who wants division. I find myself leaning towards the discernment side so I tend to be cautious about who I’m uniting with. But that’s a long study and process. I have been observing that it’s not just a simple act of being united. I like the idea that there is some substance behind it.
First, church unity involves professing the same truth.
The challenge often comes in those areas where we have a different opinion about a lower-tier issue, or we have a different preference or desire than someone else about various matters. That’s why Paul goes on to give a second aspect of church unity, noting that believers who are upholding this standard recognize that they are playing for the same team.
Finally, the call to church unity means that we must all be practicing the same thinking.
I do like the discussion about Judgment, which you can read in the short article.
Paul writes some good things about this in Ephesians; I recommend reading it in the KJV. And listening to Dr. Martyn Lloyd-Jones sermons on the Book.
Ephesians 1:8 Wherein he hath abounded toward us in all wisdom and prudence;
Ephesians 1:17-18 That the God of our Lord Jesus Christ, the Father of glory, may give unto you the spirit of wisdom and revelation in the knowledge of him: 18 The eyes of your understanding being enlightened; that ye may know what is the hope of his calling, and what the riches of the glory of his inheritance in the saints,