Sometimes the most difficult and significant tasks involve the simplest truths. For instance, every Christian should quickly learn that vengeance belongs unto the Lord. God confirms as much throughout scripture (Deuteronomy 32:35; Psalm 94:1; Romans 12:19; Hebrews 10:30). This should be understandable as only the Lord has all the necessary information to execute just vengeance 100 percent of the time. When man attempts to execute vengeance, he often does so out of an improper motive or without key information of the evil that appears to have been done. Furthermore, when a believer takes vengeance into his own hands, he robs the Lord of His right and responsibility to exact vengeance at the right time and in the right manner.
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.