The striking and somewhat ludicrous image of the beam and the mote is found in Rabbinical writings, and: nay have been familiar to Christ's hearers. But His use of it is deeper and more searching than the rabbis' was. He has just been speaking of blind guides and their blind followers. That' parable,' as Luke calls it, naturally images another defect which may attach to the eye. A man may be partly blind because some foreign body has got in. If we might suppose a tacit reference to the Pharisees in the blind guides, their self-complacent censoriousness would be in view here; but the application of the saying is much wider than to them only.
Luke 6:41 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. It is no unusual thing to hear some one, bedaubed with dirt from head to foot, declaiming with disgust about a speck or two on his neighbour's white robes.
Satan reproving sin is not an edifying sight, but Satan criticising sin is still less agreeable. If only he that is without sin among you' would fling stones, there would be fewer reputations pelted than there are. Most men know less about their own faults than about their brother's. They use two pairs of spectacles--one which diminishes, and is put on for looking at themselves; one which magnifies, and is worn for their neighbour's benefit. But when their respective good qualities are to be looked at, the other pair is used in each case. That is men's way, all the world over.
Christ's question asks the reason for this all but universal dishonesty of having two weights and measures for faults. He would have us ponder on the cause, that we may discover the remedy. He would have us reflect, that we may get a vivid conviction of the unreasonableness of the practice. There is nothing in the fact that a fault is mine which should make it small in my judgment; nor, on the other hand, in the accident that it is another's, which should make it seem large. A fault is a fault, whoever it belongs to, and we should judge ourselves and others by the same rule. Only we should be most severe in its application to ourselves, for we cannot tell how much our brother has had, to diminish the criminality of his sin, and we can tell, if we will be honest, how much we have had, to aggravate that of ours. So the conscience of a true Christian works as Paul's did when he said Of whom I am chief,' and is more disposed to make its own motes into beams than to censure its brother's.
The reason, so far as there is a reason, can only lie in our diseased selfishness, which is the source of all sin. And the blindness to our beams' is partly produced by their very presence. All sin blinds conscience. A man with a beam in his eye would not be able to see much. One device of sin, practised in order to withdraw the doer's attention from his own deed, is to make him censorious of his fellows, and to compound for the sins he is inclined to by condemning other people's.
Luke 6:42 teaches that the conquest of our own discovered evils must precede efficient attempts to cure other people's. To pose as a curer of them while we are ignorant of our own faults is, consciously or unconsciously, hypocrisy, for it assumes a hatred of evil, which, if genuine, would have found first a field for its working in ourselves. An oculist with diseased eyes would not be likely to be a successful operator. Physician, heal thyself' would fit him well, and be certainly flung at him. A cleansed eye will see the brother's mote clearly, but only in order to help its extraction. It is a delicate bit of work to get it out, and needs a gentle hand.
Our discernment of others' faults must be compassionate, not to be followed by condemnation nor self-complacency but by loving efforts to help to a cure. And such will not be made unless we have learned our own sinfulness, and can go to the wrongdoer in brotherly humility, and win him to use the eye-salve' which our conduct shows has healed us.
