Dietrich Bonhoeffer, on how learning to curb our evil words about others in the Christian community (which really are just the outward expression of evil thoughts) leads to an entirely changed outlook on our fellow image-bearers:

Where this discipline of the tongue is practiced right from the start, individuals will make an amazing discovery. They will be able to stop constantly keeping an eye on others, judging them, condemning them, and putting them in their places and thus doing violence to them. They can now allow other Christians to live freely, just as God has brought them face to face with each other. The view of such persons expands and, to their amazement, they recognize for the first time the richness of God’s creative glory shining over their brothers and sisters. God did not make others as I would have made them. God did not give them to me so that I could dominate and control them, but so that I might find the Creator by means of them. Now other people, in the freedom with which they were created, become an occasion for me to rejoice, whereas before they were only a nuisance and trouble for me. God does not want me to mold others into the image that seems good to me, that is, into my own image. Instead, in their freedom from me God made other people in God’s own image. I can never know in advance how God’s image should appear in others. That image always takes on a completely new and unique form whose origin is found solely in God’s free and sovereign act of creation. To me that form may seem strange, even ungodly. But God creates every person in the image of God’s Son, the Crucified, and this image, likewise, certainly looked strange and ungodly to me before I grasped it.