Charles H. Spurgeon on Psalms 59:12

For the sin of their mouth and the words of their lips let them even be taken in their pride. Such dreadful language of atheism and insolence deserves a fit return. As they hope to take their victims, so let them be taken themselves, entangled in their own net, arrested in the midst of their boastful security. Sins of the lips are real sins, and punishable sins. Men must not think because their hatred gets no further than railing and blasphemy that therefore they shall be excused. He who takes the will for the deed, will take the word for the deed and deal with men accordingly. Wretches who are persecutors in talk, burners and stabbers with the tongue, shall have a reckoning for their would be transgressions. Pride though it show not itself in clothes, but only in speech, is a sin; and persecuting pride, though it pile no faggots at Smithfield, but only revile with its lips, shall have to answer for it among the unholy crew of inquisitors. And for cursing and lying which they speak. Sins, like hounds, often hunt in couples. He who is not ashamed to curse before God, will be sure to lie unto men. Every swearer is a liar. Persecution leads on to perjury. They lie and swear to it. They curse and give a lying reason for their hate. This shall not go unnoticed of the Lord, but shall bring down its recompense. How often has it happened that while haughty speeches have been fresh in the mouths of the wicked they have been overtaken by avenging providence, and made to see their mischief recoil upon themselves!