"...there is a religious progression in profanity: it move from defiance of God to an invocation of excrement and sex, and then perverted forms of sex.  this religious progression is social as well as verbal. The profane society invokes, not God, but the world of the illicit, the obscene, and the perverted.  What it invokes in word it also invokes in act."
-R.J. Rushdoony from The Institutes Of Biblical Law

"Verbal profanity is an oral witness to a social profanity.  As the verbal profanity delves downward, so does society in its actions....profanity is a barometer.  It is indicative of revolution in progress.  It is an index to social deterioration and degeneration."
-R.J. Rushdoony from The Institutes Of Biblical Law

“It signifies want of Christian love. For love speaks not evil, nor reveals men's faults without a cause, but covers infirmities; much less will it lie and slander others, and carry about uncertain reports against them.”
     - Richard Baxter from The Evil of Backbiting and Evil-Speaking

“It is forbidden of God among the heinous, damning sins, and made the character of a notorious wicked person, and the avoiding of it is made the mark of such as are accepted of God and shall be saved: Rom. 1:29, 30, it is made the mark of a reprobate mind, and joined with murder, and hating God, viz. "full of envy, debate, deceit, malignity, whisperers, backbiters." Psal. 15:1,3, "Lord, who shall abide in thy tabernacle? who shall dwell in thy holy hill? He that backbites not with his tongue, nor does evil to his neighbour, nor takes up a reproach against his neighbour."
     - Richard Baxter from The Evil of Backbiting and Evil-Speaking

“It is a sin which commonly excludes true, profitable reproof and exhortation. They that speak most behind men's backs, do usually say least to the sinner's face, in any way which tends to his salvation. They will not go lovingly to him in private, and set home his sin upon his conscience, and exhort him to repentance: but any thing shall serve as a sufficient excuse against this duty: that they may make the sin of backbiting serve instead of it: and all is out of carnal self-saving; they fear men will be offended if they speak to their faces, and therefore they will whisper against them behind their backs.”
     - Richard Baxter from The Evil of Backbiting and Evil-Speaking