The Gemara identifies four people who died only because of the 'decree of the snake' (i.e., the death brought into the world by Adam's sin) and not due to any sin of their own: Binyamin ben Yaakov, Amram (father of Moshe), Yishai (father of David), and Kilav (son of David). This is the foundational Talmudic source for this concept.
מֵיתִיבִי: אַרְבָּעָה מֵתוּ בְּעֶטְיוֹ שֶׁל נָחָשׁ, וְאֵלּוּ הֵן: בִּנְיָמִין בֶּן יַעֲקֹב, וְעַמְרָם אֲבִי מֹשֶׁה, וְיִשַׁי אֲבִי דָוִד, וְכִלְאָב בֶּן דָּוִד. וְכוּלְּהוּ גְּמָרָא, לְבַר מִיִּשַׁי אֲבִי דָוִד דִּמְפָרֵשׁ בָּהּ קְרָא, דִּכְתִיב: ״וְאֶת עֲמָשָׂא שָׂם אַבְשָׁלוֹם תַּחַת יוֹאָב (שַׂר) [עַל] הַצָּבָא וַעֲמָשָׂא בֶן אִישׁ וּשְׁמוֹ יִתְרָא הַיִּשְׂרְאֵלִי אֲשֶׁר בָּא אֶל אֲבִיגַיִל בַּת נָחָשׁ אֲחוֹת צְרוּיָה אֵם יוֹאָב״. וְכִי בַּת נָחָשׁ הֲוַאי? וַהֲלֹא בַּת יִשַׁי הֲוַאי, דִּכְתִיב: ״וְאַחְיוֹתֵיהֶן צְרוּיָה וַאֲבִיגַיִל״. אֶלָּא: בַּת מִי שֶׁמֵּת בְּעֶטְיוֹ שֶׁל נָחָשׁ.
The Gemara raises an objection from what was taught in the following baraita: Four people died due to Adam’s sin with the serpent, in the wake of which death was decreed upon all of mankind, although they themselves were free of sin. And they are: Benjamin, son of Jacob; Amram, father of Moses; Yishai, father of David; and Kilab, son of David. And all of them were learned through tradition, except for Yishai, father of David, with regard to whom there is an explicit verse interpreted homiletically, as it is written: “And Absalom placed Amasa in charge of the army in place of Joab, and Amasa was the son of a man named Ithra the Israelite, who had taken to himself Abigail the daughter of Nahash, sister of Zeruiah, the mother of Joab” (II Samuel 17:25). The Gemara asks: And was Abigail the daughter of Nahash? Wasn’t she the daughter of Yishai, as it is written: “And Yishai begot his firstborn Eliab, and Abinadab the second, and Shimea the third, Nethanel the fourth, Raddai the fifth, Ozem the sixth, David the seventh: and their sisters were Zeruiah and Abigail. And the sons of Zeruiah: Abishai, and Joab, and Asahel, three. And Abigail bore Amasa; and the father of Amasa was Jether the Ishmaelite” (I Chronicles 2:13–17)? Apparently, Abigail was the daughter of Yishai. Rather, the verse states that Abigail was the daughter of Nahash in order to teach us that she was the daughter of one who died on account of Adam’s sin with the serpent [naḥash], though he himself was free of sin.