Only a foolish man thinks he can hide anything from the Lord. This includes his thought life. The Lord knows all man’s thoughts (1 Chronicles 28:9) which includes the good (Malachi 3:16) and the bad (Psalm 94:11). David expressed this truth to the Lord when he said, “Thou knowest . . . my thought afar off. . . . For there is not a word in my tongue, but, lo, O LORD, thou knowest it altogether” (Psalm 139:2-4). The Lord Jesus Christ often exhibited this capability during His earthly ministry (Matthew 12:25; Luke 5:22; Luke 6:8; Luke 9:47; Luke 11:17). Even the written word of God reveals this ability by being “a discerner of the thoughts and intents of the heart” (Hebrews 4:12).
The Lord laboured to reveal, inspire, and preserve His words for man to read, learn, and study. Did He do so but then insure that no one could possibly understand? No! The Lord gave man His word with the expectation that each believer would read it and heed what it says. In Isaiah 34:16, the Lord commanded His people to “Seek . . . out of the book of the LORD, and read.” In fact, a constant theme of the Lord’s rebukes, during His earthly ministry, pertained to man’s failure to read the scriptures. In Matthew 12:3, the Lord rebuked the Pharisees for their failure to read about the exploits of David. In another place, the Lord rebuked the Sadducees by saying, “Ye do err, not knowing the scriptures, nor the power of God” (Matthew 22:29). The Lord obviously expected His people to know and heed His word.
Murmuring is a grievous sin harmful to everyone involved or impacted. When God’s people murmur, they do so because their heart is not sufficiently focused upon the Lord. Various forms of the word murmur occur forty times in the word of God. Interestingly, the number forty throughout scripture is frequently connected to a time of testing or trial. The vast majority of these occurrences reflect people who were displeased with something the Lord was responsible for doing. Their displeasure with the Lord caused them to voice their frustrations to others. Murmuring generally manifests itself outwardly, but at its root is a heart problem (Matthew 12:34; Matthew 15:19). It comes as no surprise that the medical community uses the term murmur to describe a heart problem.
Our words should never be used by the Devil as weapons to destroy or discourage others. Any problem with our words reveals a problem with our heart: “out of the abundance of the heart the mouth speaketh” (Matthew 12:34). The mouth can exhibit good or bad and our actions reveal the heart of the problem when the Bible says, “out of the heart proceed evil thoughts, murders, adulteries, fornications, thefts, false witness, blasphemies” (Matthew 15:19). This is why our words are not always profitable to those who hear them. Yet, God admonishes us to “let no corrupt communication proceed out of” our mouth. Believers are instead encouraged to make sure their words are “good to the use of edifying.” The saint of God should speak words that God can use to build up other saints in the faith.
The Bible says that “out of the abundance of the heart the mouth speaketh” (Matthew 12:34). This means that the words proceeding out of our mouths originate in our hearts. When we speak bitter words, it is because there is bitterness within our hearts. David likened bitter words to arrows that pierce the flesh (Psalm 64:3). Our words ought to be “seasoned with salt” (Colossians 4:6); instead, we often allow our words to pierce through others. We tear people down rather than building them up. Why is this? Because we have a root of bitterness growing inside that finds its way from our hearts into and out of our mouths. Those who demean others generally do so because they are bitter. Attempts to justify this behaviour are fruitless because the Lord knows the root of the problem stems from our heart.
“Out of the abundance of the heart the mouth speaketh” (Matthew 12:34). As such, the words that proceed from our mouths provide helpful insights into the condition of our hearts. A man can only deceive with his words for so long; eventually, his speech exposes the reality of his heart's condition. The Bible reinforces this truth when it says, “the words of the pure are pleasant words” (Proverbs 15:26). The Bible also identifies words of praise to God as “pleasant” words (Psalm 135:3; Psalm 147:1). Impure words manifest an unpleasantness. Whereas, a pure heart utters pure words and speaks of the Lord and of His goodness.
The Old Testament Law sometimes condemned the guilty without remedy and with little mercy for the oft offending party. Our passage explains one such instance. It describes the method by which God's Law punished a disobedient child following repeated attempts made to correct him. Certainly, the method of punishment has changed under grace, but the passage proves the importance of obedience. Though God’s method of punishment has changed, His requirement for obedience has remained forever constant. Failing to learn obedience at an early age presents a stumbling block that impedes future growth. Perhaps this is why the Old Testament Law was so strict in punishing offending children. Unfortunately, far too many children in Christian homes think that if they could simply escape the confines of their godly homes they could truly enjoy life. Some of these children simply can't wait to grow up to be finally free to do whatever they want. However, God demands obedience and judges disobedience regardless of one's misconceptions.
