Let no corrupt communication proceed out of your mouth, but that which is good to the use of edifying, that it may minister grace unto the hearers. And grieve not the holy Spirit of God, whereby ye are sealed unto the day of redemption.  Eph 4:29-30  Grieve not is defined as to cause the Spirt to stop working.  This is important because if we don’t watch our speech we will speak against the issues where we need God’s help.