Interesting to note mind and mouth. To think and speak is a dynamic duo. And to do so in glorifying God is the pinnacle.
Therefore, we should audiblby speak our righteous and vetted thoughts outloud and boldly. Speaking our prayers and affirmations give them extra power.
Did not God speak the whole universe into existence?
Did not Jesus voice for Lazarus to come forth?
Did not James reference the power of the tongue, for good or bad, as like moving a big ship with a small rudder?
Thoughts and speech are a powerful punch!