One of the things that God hate is pride. Pride means, we think we are the best, and no one is better than I. Pride is one thing that kills every spiritual power of the Christians. Jesus Christ came to this world, not for pride, but for love and humbleness. He had all the reasons to be proud, if he wanted, bu he did not. We as Christians, we must humble ourselves.
Many churches fall because of pride.
At first pastors are starting well and with humble spirit, but when the church grows, they start to lose that humbleness and act like president. Some of us Christians, we have the tendency to act as if the church we attend is the best and the others are not. Therefore if a person belongs to other church than ours we do not like them and we do not greet them. This act is a very wrong act. God hates this.