Charles H. Spurgeon on Psalms 15:3

"He that backbiteth not," etc. Detraction or slander is not lightly to be passed over, because we do so easily fail in this point. For the good name of a man, as saith Solomon, is a precious thing to every one, and to be preferred before much treasure, insomuch that it is no less grievous to hurt a man with the tongue than with a sword: nay, ofttimes the stroke of a tongue is grievouser than the wound of a spear, as it is in the French proverb. And therefore the tongue must be bridled, that we hurt not in any wise the good name of our neighbour; but preserve it unto him safe and sound, as much as in us shall lie. That which he addeth touching evil or injury not to be done to our neighbour, is like unto that which we have seen already concerning the working or exercising of righteousness. He would have us therefore so to exercise all upright dealing, that we might be far from doing any damage or wrong to our neighbours. And by the name of neighbour, is meant every man and woman, as it is plain and evident. For we are all created of God, and placed in this world that we might live uprightly and sincerely together. And therefore he breaketh the law of human society (for we are all tied and bound by this law of nature) that doth hurt or injury to another. The third member of this verse is, nor that reproacheth another, or, that maintaineth not a false report give one against another; which latter particle seemeth to be the better, since he had spoken before expressly, touching the good name of another, not to be hurt or wronged with our tongue. To the which fault this is next in degree, wherewith we are too much encumbered, and which we scarce acknowledge to be a fault, when we further and maintain the slanders devised and given out by another against a man, either by hearing them or telling them forth to others, as we heard them. For why? It seemeth for the most part to be enough for us if we can say, that we feign not this or that, nor make it of our own heads, but only tell it forth as we heard it of others, without adding anything of our own brain. But as oft as we do this we fail in our duty doing, in not providing for our neighbour's credit, as were requisite for the things, which being uttered by others ought to be passed over in silence and to lie dead, we gather up, and by telling them forth, disperse them abroad, which whether it be a sin or no, when as we ought by all means possible to wish and do well unto our neighbours, all men do see. And therefore thou that travellest towards eternal life, must not only not devise false reports and slanders against other men, but also not so much as have them in thy mouth being devised by others, neither by any means assist or maintain them in slandering; but by all honest and lawful means, provide for the credit and estimation of thy neighbour, so much as in thee lieth. Peter Baro, D.D., 1560.