God has made a provision in Scripture for the healing of our tongues. The first step in acquiring this is to identify the root of the problem. The testimony of Scripture is clear and unequivocal: the root of every problem affecting our tongues is in our hearts.
In Matthew 12:33-35, Jesus says:
“Make a tree good and its fruit will be good, or make a tree bad and its fruit will be bad, for a tree is recognised by its fruit. You brood of vipers, how can you who are evil say anything good? For out of the overflow of the heart the mouth speaks. The good man brings good things out of the good stored up in him, and the evil man brings evil things out of the evil stored up in him.” (NIV)
The heart is the tree and the words are the fruit. The words that come out of the mouth indicate the condition of the heart. If the heart is good, the words will be good. If the heart is evil, the words will be evil. Our hearts are either good or evil all the way through. Whatever flows out of your mouth indicates the contents of your heart.
If you accidentally spill some water from a pail onto the kitchen floor and you see that the water you spilled is dirty and greasy, you do not need to examine the water that is left in the bucket. You know it is dirty and greasy. The same applies to our hearts. If evil, impure, unbelieving, corrupt words come out of our mouths, then that indicates that the same condition prevails in our hearts.
Compare the text from James 3:9-12, where James speaks about the inconsistencies of religious people:
“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 [or blessing] 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.” (NIV)
James combines two pictures there. One is of a spring of water; the other is of a tree. He says that an olive tree will never bear another kind of fruit, such as figs. The kind of tree indicates the kind of fruit. James is using the same picture as Jesus. The tree is the heart and the fruit is the words that come out of the mouth. He also uses another picture, a spring of water. He says that if brackish, salty water comes out of a spring, you know the water in the spring is brackish and salty.
Dear Lord, I praise and thank You for the gift of a completely new heart, through the cleansing power of Your Blood and Your atoning sacrifice. Thank You, Lord, for the new spring of clear and living water of the Holy Spirit. Please help me to never again allow salty and brackish water to flow out of my mouth. In Jesus' Name, Amen.