Bitterness is anger and disappointment at being treated unfairly; resentment. People who are bitter look at others being the problem without considering the need to look in the mirror and assessing their own actions. It is written by THE SPIRIT in Deuteronomy chapter 29:
18 so that there may not be among you man or woman or family or tribe, whose heart turns away today from the LORD our God, to go and serve the gods of these nations, and that there may not be among you a root bearing bitterness or wormwood;
19 and so it may not happen, when he hears the words of this curse, that he blesses himself in his heart, saying, ‘I shall have peace, even though I follow the stubbornness of my heart’—as though the drunkard could be included with the sober.
People who walk around in bitterness will poison those around them by redirecting the issue away from the true source of the problem. Often they claim to be the victim as though their past actions were pure and righteous yet to everyone else it is obvious that they contributed to the issues which led to their bitter state. It is written in Hebrews chapter 12:
12 Therefore strengthen the hands which hang down, and the feeble knees,
13 and make straight paths for your feet, so that what is lame may not be dislocated, but rather be healed.
14 Pursue peace with all people, and holiness, without which no one will see the Lord:
15 looking carefully lest anyone fall short of the grace of God; lest any root of bitterness springing up cause trouble, and by this many become defiled;
16 lest there be any fornicator or profane person like Esau, who for one morsel of food sold his birthright.
17 For you know that afterward, when he wanted to inherit the blessing, he was rejected, for he found no place for repentance, though he sought it diligently with tears.
We must not allow the root of bitterness to grab hold in our hearts and defile us as well as those around us. Those who turn from FATHER and serve other gods are susceptible to bitterness taking root. Their trust is not found in their relationship with FATHER and the stubbornness in their heart causes them to make poor decisions and alienate others. Can you imagine selling your birthright for a morsel of food? No one in their right mind would do this yet we see people make poor decisions of this nature all the time. If we truly trust FATHER to watch over us then we will not become bitter when trials and tests come our way. In Romans chapter 8 Paul wrote by THE SPIRIT:
26 Likewise the Spirit also helps in our weaknesses. For we do not know what we should pray for as we ought, but the Spirit Himself makes intercession for us with groanings which cannot be uttered.
27 Now He who searches the hearts knows what the mind of the Spirit is, because He makes intercession for the saints according to the will of God.
28 And we know that all things work together for good to those who love God, to those who are the called according to His purpose.
We must allow The Holy Spirit to minister to us when we are weak an susceptible to error. We must trust in the reality that FATHER is working all things out for our good even though we cannot see the big picture. If we have been wronged by another we must trust FATHER to deal with the other person and not allow ourselves to become bitter toward that person. If we are to Love our enemies as well as our friends then we cannot hold a grudge against anyone for any reason. We must not allow ourselves to have a stubborn heart and we must guard our heart for out of it springs forth the issues of life.
If you are bitter towards someone, it is time to pluck that root out and repent. Get over it and place your trust in FATHER to lead and guide you according to HIS Divine Intent of Love.