Abraham's Victory

Deinde a quinque regibus, qui Sodomis irruerant, captum Lot liberat, habens secum in praelio trecentos decem et octo vernula. Sed quid haec victoria Abrahae de quinque regibus indicabat, quos ille fidei pater mysterio superavit, nisi quod fides nostra, si confirmata sit in spiritu principali, totidem corporis nostri sensus verbo Dei subigat? Nam sicut ille de proximo in regibus victor, ita et fides nostra per animam victrix de exeriore homine triumphat. Quod vero ille non multitudine, nec virtute legionum, sed tantum trecentis decem et octo comitantibus, adversarios principes debellavit, jam tunc in sacramento crucis, cujus figura per Tau litteram Graecem numero trecentorum exprimitur, imaginatbatur, quod nos Christi passio liberaret a dominatu quinque carnalium sensuum, qui nos antea variis vitiis captivantes exsuperaverant. Sanctus Isidorus Hispalensis,Mysticorum Expositiones Sacramentorum Seu Quaestiones In Vetus Testamentum, In Genesin, Caput XI Source: Migne PL 83.239b-c

Then from the five kings, who overcame Sodom, Abraham liberated the captive Lot, having with him in battle three hundred and eighteen servants. 1 And what does this victory of Abraham over the five kings indicate, those that father of faith overcome mystically, but that our faith, if it is fortified with the great spirit, every day subjugates the senses of our body with the Word of God? For as he for his neighbour was victor against kings, so even our faith triumphing over the exterior man is a victor for the soul. And that he conquered hostile princes not with a multitude, nor with the strength of legions, but with only three hundred and eighteen companions, gives an image of the mystery of the cross, by the figure of the Greek letter Tau τ, which expresses the number three hundred, because the passion of Christ liberated us from the domination of the five carnal senses, who had before held us captive to various vices. Saint Isidore of Seville, Expositions of Sacred Mysteries or Questions on the Old Testament, On Genesis, Chap 11 1 Gen 14.1-16