Bede : Now the beginning of his kingdom was Babylon and Erech, and Accad, and Calneh, in the land of Shinar. In the following passages, it is more fully explained how Babylon was made; but here it is first stated that it is left unmentioned that Nimrod was the builder of that city and its most proud tower. The beginning of his kingdom was Babylon, either because it was the first of his cities, founded, or because it was considered the metropolis of his kingdom due to its size and splendor. "Erech is what is now Edessa, Accad is what is now Nisibis, a city of Mesopotamia. Calneh is what is now Seleucia, named after King Seleucus, or certainly what is now also called Ctesiphon." But what is added in the land of Shinar seems to pertain to all the same four cities. Shinar, indeed, is said to be a plain of such width that it could easily contain Babylon itself and many other cities. Because Babylon, with the cities of which it is the capital, designates the proud glory of this world, which is subject to confusion; for Babel means confusion, aptly the builder of it figuratively indicates the devil, who is the head of all evils; to whom also the name Nimrod, which sounds like tyrant, or fugitive, or transgressor, suits well. For he is a tyrant because, rebelling against the Creator, he strives to obtain the height of divinity and the kingdom of the world. He is a fugitive, because, having fallen from heaven and cast out from the society of the angels who remained in their state, he wretchedly exults too much. He is a transgressor, because he disdained to obey the will of the Creator, to whom the role of a hunter is not undeservedly attributed; for he sets traps of his ambushes in the forest of this world, and hunts men who are clean in nature and wit, like deer and goats, deceiving them for death: surely opposed to those hunters who seek to catch the souls of men by their teaching so that they may lead them to eternal life; to whom the Lord speaks, saying, "Come after me, and I will make you become fishers of men" (Matthew 4:19); whose homeland for that reason was called Bethsaida, that is, the House of Hunters, because they were to hunt men for life. Now Nimrod is the son of Cush, which is interpreted as Ethiopian, because indeed the ancient enemy always arises anew from the dark people of the unfaithful through the execution of nefarious teaching or operation. — Commentary on Genesis (Hexaemeron) Jerome : (Verse 10.) And it was, he said, the head of his kingdom, Babel and Arach, and Achad, and Chalanne in the land of Sennaar. Nimrod, the son of Chus, first seized an unprecedented tyranny among the people, and he reigned in Babylon, which was named after him because the tower of the builders' confusion occurred there. For Babel means confusion. However, he also reigned in Arach, which is Edessa, and in Achad, which is now called Nisibis: and in Chalanne, which later, under a different name, was called Seleucia by King Seleucus, or certainly what is now called Ktesiphon. — Hebrew Questions on Genesis John Chrysostom : Nimrod too, however, in his turn in imitation of his forebear did not take due advantage of his natural preeminence but hit upon another form of servitude in endeavoring to become ruler and king. You see, there would not ever be a king unless there were people being ruled. But in that case freedom is seen for what it really is, whereas slavery is the most galling obstacle to conditions of freedom, when all the more power is exercised over free people. See what ambition is guilty of. Observe bodily strength not keeping to its limits but constantly lusting after more and clutching for glory. You see, the orders [Nimrod] gave were not those of a leader. Rather, he even builds cities with a view to ruling over the enemy. — HOMILIES ON Genesis 29.29