"Why do you look at the speck of sawdust in your brother’s eye and pay no attention to the plank in your own eye?"
This verse is a reminder not to judge quickly. It teaches that the accurate measurement of the magnitude of our own failings should precede our detection of our brother’s. Christ assumes the commonness of the opposite practice by asking ‘why’ it is so. And we have all to admit that the assumption is correct. The keenness of men’s criticism of their neighbour’s faults is in inverse proportion to their familiarity with their own.
Our actions are our self-revelations. The words are not to be pressed, as if they taught the entire goodness of one class of men, so that all their acts were products of their good character, nor the unmingled evil of another, so that no good of any kind or in any degree is in them or comes from them. They must be read as embodying a general truth which is not as yet fully exemplified in any character or conduct.