Convicting

"Until God ordains otherwise, a man ought to bear patiently whatever he cannot correct in himself and in others. Consider it better thus -- perhaps to try your patience and to test you, for without such patience and trial your merits are of little account. Nevertheless, under such difficulties you should pray that God will consent to help you bear them calmly."

Imitation of Christ
Thomas a Kempis

For the whole chapter, entitled Bearing With the Faults of Others, go here.