Genesis 27:41. A simple definition of unforgiveness is "a grudge against someone who has offended you". From a Christian perspective, unforgiveness is a sin in that it is the opposite of forgiveness. Forgiveness is the essence of loving our fellow man while unforgiveness is a sin that results in hate and much worst. Forgiveness is of God while unforgiveness is not of God. As long as a person holds on to unforgiveness, no matter the excuse or the offense, the sin of unforgiveness rots a person’s soul.
The Bible tells us of Esau and his unforgiveness toward his brother, Jacob. Genesis 27:41 says, “And Esau hated Jacob because of the blessing wherewith his father blessed him: and Esau said in his heart, The days of mourning for my father are at hand; then will I slay my brother Jacob.” Esau had all the excuses in the world to hold a grudge against his brother. Jacob had offended him greatly by taking his father’s blessing. Esau could not forgive nor have love for his brother. His unforgiveness, his sin, now grew where he now hated his brother and vowed to kill him. Unforgiveness leads us to do terrible things to others and to corrupt our own souls.
GENESIS 27 BIBLE SCRIPTURE Genesis 27:41, "And Esau hated Jacob because of the blessing wherewith his father blessed him: and Esau said in his heart, The days of mourning for my father are at hand; then will I slay my brother Jacob."