Winning the Battle Over Complaining - Murmuring and Grumbling

PROVERBS 18:20-21 NKJ 20 A man's stomach shall be satisfied from the fruit of his mouth, and from the produce of his lips he shall be filled.
21 Death and life are in the power of the tongue, and those who love it will eat its fruit.

John 6:43Amplified Bible, Classic Edition (AMPC)  43 So Jesus answered them, Stop grumbling and saying things against Me to one another.

Philippians 2:14 KJV

Do all things without grumbling and faultfinding and complaining [against God] and questioning and doubting [among yourselves],