Now I appeal to you, brothers and sisters, by the name of our Lord Jesus Christ, that all of you be in agreement and that there be no divisions among you, but that you be united in the same mind and the same purpose. For it has been reported to me by Chloe’s people that there are quarrels among you, my brothers and sisters.
—1 Corinthians 1.10-11
Notice here that Paul does not say they need to be one in doctrine or theology. Rather, he says mind and purpose. They should have the same goals for the church. They should have the same sense of mission. They should all be moving in the same direction.
They should also be of one mind. This can mean lots of things, but the sense that I get is that it’s closely related to the purpose. They are singularly focused on what is essential and have proper weight and proper priority given to the proper things. Looking at the different allegiances that Paul goes on to criticize within the Church, there does seem to be a lot of doctrinal and theological diversity in this church. Paul, in a sense, seems overjoyed about this. He has a problem, rather, with their disjointed sense of purpose and mission. So, doctrinal diversity is good. Loss of mission is bad.