It is easier to cry against a thousand sins of others than to kill one of your own. (John Flavel, 17th century English clergyman)
We are sometimes distressed by the cruelty and violence we see in the world, and we want to cry out against it, demanding that the guilty be punished for their gross sins. Quite often, however, we are not even aware of our own shortcomings, perhaps not as gross and public but no less offensive to a holy God and hurtful to others. Clearly, Flavel is right.
Do not judge others, and you will not be judged. . . . Why worry about a speck in your friend’s eye when you have a log in your own? . . . Hypocrite! First get rid of the log in your own eye; then you will see well enough to deal with the speck in your friend’s eye. (Matthew 7:1-5)