So a christian curses someone. That is a weakness he had before becoming a christian. But he still has this weakness and needs to renew his mind with God's word to stop cursing.
"Don’t be conformed to this world, but be transformed by the renewing of your mind, so that you may prove what is the good, well-pleasing, and perfect will of God."
How to Transform the Mouth
- commit bible verses concerning mouth to memory
- say verses out loud each day
- ask God to help you
Your faith will increase by saying the verses out loud according to Romans 10:17.
"So faith comes by hearing, and hearing by the word of God." You must be diligent in studying God's word. Through persistence you can use the word to cleanse your mind and heart.King Solomon said in proverbs to guard your heart. Proverbs 4:23 "Keep your heart with all diligence, for out of it is the wellspring of life." Being the wellspring of life means that all that you say, do, and think comes from your heart. It is like a river flowing into tributaries. Ask Jesus to help your cleanse your mouth from gossip, slander, cursing, and using His name in vain. Psalm 141:3"Set a watch, Yahweh, before my mouth. Keep the door of my lips."
" A gentle tongue is a tree of life, but deceit in it crushes the spirit."
"Out of the same mouth comes blessing and cursing. My brothers, these things ought not to be so."
The quoted bible verses and many others can help you guard your mouth, which is something we all need to do.