Bitterness– a state of rage and wrath, sometimes brought on by unfair treatment or unfavorable circumstances.
The causes of bitterness
Adverse personal circumstances Job 10:1 Also see: Ge 27:34; Ru 1:20 “Mara” means “bitter”; 1Sa 30:6; 2Sa 13:36; 2Ki 4:27; Ps 55:4-14; Pr 17:25; Jer 6:26