Out of the same mouth proceedeth blessing and cursing. My brethren, these things ought not so to be.James 3:10 (KJV)
Most of the time, what a particular verses says is really what it says. There are times when interpretation is simply not necessary. This is one of those. Throughout the chapter, James discusses the fallacy of blessing and cursing coming from the same person, how small members are enough to steer the whole body. Just as a fountain does not bring forth good and bad water, so too should blessings and curses not mingle.