Ambrose of Milan : "When Abraham learned of this, he counted his servants born in the house" and with 318 men won a victory and liberated his nephew. This shows that the separation had taken place in friendship, since Abraham's love for his nephew was so great that he was willing to confront even the dangers of war on his behalf. What does it mean "he counted"? It means he "chose." So too what Jesus said in the Gospel refers not only to the knowledge of God but also to the grace of the just: "Even the hairs on your head are all counted." Indeed, "the Lord knows those who are his," but those who are not his he does not deign to know. Abraham, then, counted 318 men. You should understand that it is not numerical quantity that is here expressed but the value of their election. He chose, in fact, those whom he judged worthy to belong to the number of the faithful who were to believe in the passion of our Lord Jesus Christ. Indeed, the letter T in Greek means "three hundred," and the sum IH—ten plus eight—expresses the name of Jesus. So Abraham conquered in virtue of faith, not through the strength of a numerous army. And so it was that with no more than a few house servants he triumphed over those who had defeated the armies of five kings. — On Abraham Bede : When Abram heard that his brother Lot had been captured, he numbered his trained servants, three hundred and eighteen, and so on. Indeed, it is a very great miracle of divine power that Abraham, with such a small troop, inflicted such a great slaughter on the enemies, but it contains the deeper sacrament of faith in which we must overcome the spiritual battle. There were three hundred and eighteen, a number that clearly designates the victorious sign of the cross and the name of our Savior Jesus Christ, through whom this has been consecrated for the fortification of our salvation. For among the Greeks, three hundred is marked by the letter T, which is shaped like a cross. For if it had received an apex in the middle, not the figure of the cross but the very sign of the cross would be clearly seen. However, ten and eight are marked among them by Ι and Η, which are the first letters in the name of Jesus: and therefore when three hundred and eighteen are noted in Greek, it is not far from being read as the cross of Jesus. So, fittingly, Abraham overcame the enemies and freed his brother with three hundred and eighteen comrades, to mystically prefigure that the one who would recall the world from death through the passion of the cross would be born from his seed; and he himself would also, by the name of the Savior, that is, Jesus, stand out and be honored throughout the whole world: but also, that all who would pertain to salvation would achieve salvation only through this venerable sign and through his terrible name. — Commentary on Genesis (Hexaemeron) Jerome : (Verse 14) And he pursued them as far as Dan, to the city of the Phoenicians, which is now called Paneas. But Dan is one of the sources of the Jordan. For the other is also called Jor, which means 'stream'. Therefore, the Jordan is the name given to the two springs that, not far from each other, join to form a single stream. — Hebrew Questions on Genesis John Chrysostom : Consider in this case, I ask you, dearly beloved, the greatness of heart exemplified in the just man's virtue. Trusting in the power of God, he was not cowed by the force of the enemy when he learned of the rout they had caused, first by falling upon all the tribes and prevailing against the Amalekites and all the others, and then by engaging the Sodomites, putting them to flight and seizing all their property. The reason, you see, why sacred Scripture described all this to us ahead of time, as well as all they achieved through their bravery, was that you might learn that the patriarch prevailed against them not by physical strength but through faith in God. [He] achieved all this under the protection of help from on high, not by wielding weapons and arrows and spears or by drawing bows or raising shields but with a few retainers of his own household. — HOMILIES ON Genesis 35.1