Study and meditate on these Scriptures to help control your tongue. All verses listed here are from the New King James Version.
My lips will not speak wickedness, Nor my tongue utter deceit.
Lord, who may abide in Your tabernacle?
Who may dwell in Your holy hill?
He who walks uprightly,
And works righteousness,
And speaks the truth in his heart;
He who does not backbite with his tongue,
Nor does evil to his neighbor,
Nor does he take up a reproach against his friend;
Keep your tongue from evil, And your lips from speaking deceit.
And my tongue shall speak of Your righteousness, And of Your praise all the day long.
The mouth of the righteous speaks wisdom, And his tongue talks of justice.
I said, "I will guard my ways, Lest I sin with my tongue; I will restrain my mouth with a muzzle, While the wicked are before me."
My lips shall utter praise,
For You teach me Your statutes.
My tongue shall speak of Your word,
For all Your commandments are righteousness.
For there is not a word on my tongue, But behold, O LORD, You know it altogether.
The mouth of the righteous brings forth wisdom, But the perverse tongue will be cut out.
If anyone among you thinks he is religious, and does not bridle his tongue but deceives his own heart, this one's religion is useless.
Look also at ships: although they are so large and are driven by fierce winds, they are turned by a very small rudder wherever the pilot desires. Even so the tongue is a little member and boasts great things. See how great a forest a little fire kindles! And the tongue is a fire, a world of iniquity. The tongue is so set among our members that it defiles the whole body, and sets on fire the course of nature; and it is set on fire by hell.
1 Peter 3:10
For " He who would love life
And see good days,
Let him refrain his tongue from evil,
And his lips from speaking deceit.