When we are Christians we are accountable for our actions. We have the Holy Spirit in our life we should bear fruit that represent Him. Our tongue can be our biggest enemy in overcoming our flesh. Our mouths are quick to say things before we think about them. Words can be very hurtful to our testimony and to people we love.
“With the tongue we praise our Lord and Father, and with it we curse men, who have been made in God’s likeness. Out of the same mouth come praise and cursing. My brothers, this should not be. Can both fresh water and salt water flow from the same spring? My brothers can a fig tree bear olives, or a grapevine bear figs? Neither can a salt spring produce fresh water.” James 3:9-12