Cain talked with Abel his brother [about what God had said]. And when they were [alone, working] in the field, Cain attacked Abel his brother and killed him. [1 John 3:12]
Adam knew [Eve as] his wife again; and she gave birth to a son, and named him Seth, for [she said], “God has granted another child for me in place of Abel, because Cain killed him.”
Your maidservant had two sons, but the two of them struggled and fought in the field. There was no one to separate them, so one struck the other and killed him.
So when Abner returned to Hebron, Joab took him aside to the middle of the gate to speak to him privately, and there he struck Abner in the abdomen so that he died, to avenge the blood of Asahel, Joab’s brother.
When Jehoram had ascended over the kingdom of his father and made himself secure, he killed all his brothers with the sword [to eliminate any rivals], and some of the leaders of Israel as well.
There is [false] swearing of oaths, deception (broken faith), murder, stealing, and adultery; They employ violence, so that one [act of] bloodshed follows closely on another.
For the son dishonors the father and treats him contemptuously, The daughter rises up [in hostility] against her mother, The daughter-in-law against her mother-in-law— A man’s enemies are the men (members) of his own household. [Matt 10:21, 35, 36; Mark 13:12, 13]
so that on you will come the guilt of all the blood of the righteous shed on earth, from the blood of righteous Abel to the blood of Zechariah [the priest], the son of Berechiah, whom you murdered between the temple and the altar. [Gen 4:8; 2 Chr 24:21; Luke 11:51]
from the blood of Abel to the blood of Zechariah [the priest], who was murdered between the altar and the house of God. Yes, I tell you, charges will be brought against this generation.’ [Gen 4:8; 2 Chr 24:20, 21; Zech 1:1; Matt 23:35]
By faith Abel offered to God a more acceptable sacrifice than Cain, through which it was testified of him that he was righteous (upright, in right standing with God), and God testified by accepting his gifts. And though he died, yet through [this act of] faith he still speaks. [Gen 4:3-10]
and to Jesus, the Mediator of a new covenant [uniting God and man], and to the sprinkled blood, which speaks [of mercy], a better and nobler and more gracious message than the blood of Abel [which cried out for vengeance]. [Gen 4:10]
Woe to them! For they have gone the [defiant] way of Cain, and for profit they have run headlong into the error of Balaam, and perished in the rebellion of [mutinous] Korah. [Gen 4:3-8; Num 16:22-24; 2 Pet 2:15]