Achan And Corruption

Furatur interea de anathemate urbis Jericho Achan pallium, et linguam auream, pro quo, irascente Deo, perierunt quidam manu hostili ex populo. Jericho itaque, ut dictum est, mundi gerit figuram. De anathemate ergo ejus fraudans in tabernaculo suo abscondit, qui saeculares mores in secretis Ecclesiae inserit; qui, sub cultu Dei manens, solemnitates saeculi vel spectacula diligit; qui sortilegos, haruspices et augures inquirit, vel qui caeteros ritus persuadet, qui prius in Jericho, id est, in hoc saeculo habebantur; ipse ergo, quia post fidei indumentum conversationis saecularis cultum inducit, quasi pallium de anathemate tollit. Sed et ille de anathemate Jericho fraudat, qui in Ecclesia haereticorum infert dogmata, vel superstitiosa saecularium litterarum studia. Haec est enim lingua aurea luculento sermone aptate. Hanc furati sunt Arius, Marcion et Basilides. Furati sunt enim isti regulas aureas de Jericho, qui philosophorum sectam conati sunt in Ecclesiam introducere et maculare omnem Ecclesiam Domini, uta ut disperderentur multi per eos; ideoque abjecti sunt per anathema, et quasi acervo lapidum, ita multitudine peccatorum suorum oppressi atque exstincti sunt. Quorum errore perempto, rex Hai, hoc est, diabolus, qui per illorum impietatem fidelium quosdam evicerat, rursum superatus evincitur, atque a populo Dei suspensus, ligni crucis virtute necatur. Sanctus Isidorus Hispalensis,Mysticorum Expositiones Sacramentorum Seu Quaestiones In Vetus Testamentum, In Josue, Caput VIII Source: Migne PL 83.374d-375b

Meanwhile Achan, despite the ban on the city of Jericho, plundered a cloak and a bar of gold, by which,  because of the anger of God, he perished by the hostile hands of the people. 1 Thus Jericho, as has been said, is a figure of the world, and against the ban he hides his deceit in his tent who brings worldly customs into the sanctuary of the Church, he who though he remains within the worship of God, loves the weighty things of the world and its amusements, who enquires of fortune tellers, haruspices, and augers, and persuades others to do such things which were once done in Jericho, that is, in this world. Therefore he who brings in the cult of worldly cares after putting on the clothing of faith is he who takes a cloak against the ban. And he also flouts the ban concerning Jericho who brings heretical teachings into the Church, or the superstitious studies of worldly letters, for this is the golden tongue which fair speech furnishes. Whence Arius and Marcion and Basilides are plunderers, since they are plunderers of the golden bars of Jericho who try to introduce the schools of the philosophers into the Church and sully the whole of the Church of the Lord so that they might ruin many by it, and thus they are cast down by the ban, and with the mass of their sins, as with a heap of stones, they are burdened and perish. And with their fatal error, because of the impiety of those who were faithful, king Ai, that is, the devil, conquered them, but he in turn is conquered, and by the people of God hung up, slain with the power of the wood of the cross. Saint Isidore of Seville, Expositions of Sacred Mysteries or Questions on the Old Testament, On Joshua, Chapter 8 1 Joshua 7