Genesis 4:3-16

And in the course of time Cain brought to the LORD an offering of the fruit of the ground. But Abel brought [an offering of] the [finest] firstborn of his flock and the fat portions. And the LORD had respect (regard) for Abel and for his offering; [Heb 11:4] but for Cain and his offering He had no respect. So Cain became extremely angry (indignant), and he looked annoyed and hostile. And the LORD said to Cain, “Why are you so angry? And why do you look annoyed? If you do well [believing Me and doing what is acceptable and pleasing to Me], will you not be accepted? And if you do not do well [but ignore My instruction], sin crouches at your door; its desire is for you [to overpower you], but you must master it.” 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] Then the LORD said to Cain, “Where is Abel your brother?” And he [lied and] said, “I do not know. Am I my brother’s keeper?” The LORD said, “What have you done? The voice of your brother’s [innocent] blood is crying out to Me from the ground [for justice]. [Num 35:33; Deut 21:1-9] And now you are cursed from the ground, which has opened its mouth to receive your brother’s [shed] blood from your hand. [Deut 28:15-20] When you cultivate the ground, it shall no longer yield its strength [it will resist producing good crops] for you; you shall be a fugitive and a vagabond [roaming aimlessly] on the earth [in perpetual exile without a home, a degraded outcast].” Cain said to the LORD, “My punishment is greater than I can bear. Behold, You have driven me out this day from the face of the land; and from Your face (presence) I will be hidden, and I will be a fugitive and an [aimless] vagabond on the earth, and whoever finds me will kill me.” And the LORD said to him, “Therefore, whoever kills Cain, a sevenfold vengeance [that is, punishment seven times worse] shall be taken on him [by Me].” And the LORD set a [protective] mark (sign) on Cain, so that no one who found (met) him would kill him. [Gen 4:24] So Cain went away from the [manifested] presence of the LORD, and lived in the land of Nod [wandering in exile], east of Eden.