The Gemara in Shabbos 55b and Bava Basra 17a quotes a baraisa that says:
There were four who died because of the advice of the snake and never commited a sin. They are the following: Binyamin the son of Yaakov, Amram the father of Moshe, Yishai the father of David, and Kilav the son of David.
Amram- Heard a story from Midrash, when Pharoah passed a decree to kill all male babies when they were born, Amram divorced Yocheved in fear of giving brith to a male baby and he would be killed, since he was a leader at that time, his followers too did the same thing. Later by Miriam's advice he remarried Yocheved. So is this act of Amram - giving divorce - the seperation of husband and wife - wasn't considered a sin? Did he not lack faith in Hashem and did so?
Yishai - Coming to Yishai father of David, there was a long story regarding Kind David's birth. Due to the unawareness of Nitzevet's pregnancy of David, but having compassion on her, Yishai ordered his sons not to touch her. “Do not kill her! Instead, let the child that will be born be treated as a lowly, and despised servant. How come a Tzaddik like Yishai order a harsh decree on an innocent child, who was not born yet? As we can see in the Psalm 69, the agony of King David, he passionately gives voice to the heaviest burdens of His soul, he says "he has become a stranger to his brothers", why was Yishai silent when the innocent David is being treated so ruthless, is this not considered a sin for Yishai? Being in a such higher level how could he do this?
Binyamin- The Talmud lists seven people whose deaths were not due to sin, but from G‑d Himself, and as such, their bodies do not rot in their graves. Elsewhere, we are told of four people whose deaths were solely due to the Primordial Sin and not to any shortcoming of their own. Benjamin is on both lists.
I was just curious to know about Binyamin...coz i cannot find any stories regarding him...want to know why he was considered so righteous? Can i find anything about his character from Oral Torah?
Kilav - Nothing much said about him...he was identified as a son born to David and Abigael. Berakhot 4a:11-13 - "He was exceedingly wise". I got a question here...If he was wise and sinless why did Solomnon become King after David and not him. So then i got to know that he died very young...and there is an opinion may be he died before his Father. My question is if Kilav was innocent and blameless why didn't he live a long life? What made him to die so young? One might answer "may be God wanted to take him to the Gan Eden because of his merit!" - But my opinion is - Olam Haze needs the light of the righteous and not Olam Haba...it would be good to remain righteous live in this world a long term of life so that they can bring more light and enlighten many people.