An individual who lacks the basic character trait of hakoras hatov, gratitude, is a deficient person. His negativity toward those from whom he benefits engenders a negativity throughout his entire character, eventually leading to a lack of appreciation for all that Hashem does for him. Perhaps referring to an ingrate as deficient is not strong enough. An ingrate is a non-person. Part of humanness is the ability to recognize, acknowledge and appreciate the benefits one receives from others. Without this vital character trait, one is not a mentch, decent human being. Having said this, we refer to the Torah’s account…