Like mindedness grows out of mutual association. It comes from humility of heart which is not wise in its own opinion. It does not participate in elitists cliques. The selfless person will sustain an injury, accept an injustice, or endure an insult for the good of the cause. He will consistently place the good of others ahead of his own good.
Christians are to prefer one another, highly esteeming each other.
This is accomplished by accepting, befriending, and submitting to one another. The Lord was a friend of sinners, but his most intimate associations were with the righteous. Friends find it within themselves to accept and submit to one another. Mutual submission is at the heart of Christianity. Peaceful relations with brethren, honor bestowed on brethren, and love of brethren, all serve to validate one's faith.