In this modern luke warm Christianity pervading America, it is commonly dismissed that strong laguage is used in the bible against BOTH the sin and sinner.
In Matthew 23, Yahshua goes on a tirade against the religious leaders of the day, insulting them with names such as "brood of vipers" and "white washed tombs" and "fools". That may not sound like harsh language in today's vernacular, but back then it was tantamount to the most indecent and harsh insult one could lob at a person of authority today. Yahshua did not use this technique often, not even with the hardened hypocrites, but He was not timid about loosing out a stream of names and harsh insults when his stiff necked audience merited it. This was reserved for the religious, not the heathen.
In the book of Jeremiah, a passage describes the apostate Israelites being spread like dung on the earth. The better Hebrew translation for dung into our modern day vernacular would be a cuss word used to describe feces. This is serious stuff and the Holy Spirit pulls no punches in squarely rebuking the disgusting aspect of sin in a person's life.
I do not advocate using this methodology often, but it should be used when the audience merits it. In America, hardened hypocrites abound in these last days and a harsh Word from Yahweh might be just what the doctor ordered!
Special note: This is a revision of the original article entitled "Cussing in the Bible" with the intent of making it much more scriptural.