James 1:26 (AMP) 26 If anyone thinks himself to be religious (piously observant of the external duties of his faith) and does not bridle his tongue but deludes his own heart, this person’s religious service is worthless (futile, barren).
A lot of Christians may be saved but they may need to notify their mouths. (~Joyce Meyer)
There is no way I can control my tongue without God’s help and I have to ask God for help with this on a daily basis. Words have power. Our words can impact a lot of things in our lives. We can increase our joy by choosing our words wisely. Our words not only affect our joy but the joy others around us have. We have to be accountable for our words.
Some people see themselves as so spiritually mature and the look down and speak poorly about those who are not where they are in life. We can bless or curse others with our words. We reap what we sow.