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.
The Bible repeatedly mentions the bitterness of soul (1 Samuel 1:10; Job 3:20; Job 7:11; Job 10:1; Job 21:25; Isaiah 38:15). Job testified to speaking in the bitterness of his soul—weary of his life (Job 10:1). Hannah “was in bitterness of soul” (1 Samuel 1:10) when she spoke to the Lord concerning her desire to birth a son. Interestingly, the Book of Job contains the majority of references to bitterness of soul. It is hard to imagine any mortal man enduring more afflictions of the soul than Job. He was afflicted so deeply, he cursed the day that he was born (Job 3:1). Eventually, his bitterness of soul won out and caused him to sin against the Lord. Hannah, however, spoke to the Lord in bitterness of soul and God rewarded her for her faithfulness.
