Charles H. Spurgeon on Psalms 119:69

Forged a lie. Vatablus translates it, "coneinnarunt mendacta". So Tremellius: they have trimmed up lies. As Satan can transform himself into an angel of light, so he can trim up his lies under coverings of truth, to make them the more plausible unto men. And indeed this is no small temptation, when lies made against the godly are trimmed up with the shadows of truth, and wicked men cover their unrighteous dealings with appearances of righteousness. Thus, not only are the godly unjustly persecuted, but simple ones are made to believe that they have most justly deserved it. In this case the godly are to sustain themselves by the testimony of a good conscience. William Cowper.