because you are not yet spiritual. You are jealous and argue with each other. This proves that you are not spiritual and that you are acting like the people of this world.
My dear friends, as a follower of our Lord Jesus Christ, I beg you to get along with each other. Don't take sides. Always try to agree in what you think.
I am afraid that when I come, we won't be pleased with each other. I fear that some of you may be arguing or jealous or angry or selfish or gossiping or insulting each other. I even fear that you may be proud and acting like a mob.
We used to be stupid, disobedient, and foolish, as well as slaves of all sorts of desires and pleasures. We were evil and jealous. Everyone hated us, and we hated everyone.