Proverbs 18:4

The words of a man’s mouth are like deep waters (copious and difficult to fathom); the fountain of (mature, godly) wisdom is like a bubbling stream (sparkling, fresh, pure, and life giving).

Our words are essential construction builders to our lives.  All of our words create something, whether positive or negative.  If our heart is not faith-focused, our words will not be faith-focused.  If we have problems in our lives, first check what the heart believes and is speaking that isn’t in faith.