How can you say the Holy Scripture clearly teach that all men descend from a single pair. After reading Gen 4:12-17 in the Holy Scripture ? Who were the men Cain was afraid of after killing his brother ?
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Gen 4:12-17*** “you will be a fugitive and a wanderer on the earth.” Cain said to the Lord, “My punishment is greater than I can bear! Today you have driven me away from the soil, and I shall be hidden from your face; I shall be a fugitive and a wanderer on the earth, and anyone who meets me may kill me*.” Then the Lord said to him, “Not so! Whoever kills Cain will suffer a sevenfold vengeance.” And the Lord put a mark on Cain, so that no one who came upon him would kill him. Then Cain went away from the presence of the Lord, and settled in the land of Nod, east of Eden. Cain knew his wife, and she conceived and bore Enoch; and he built a city, and named it Enoch after his son Enoch”