20. [XIX.]—How a Man Makes a Good or a Bad Tree.

Now a man makes a good tree when he receives the grace of God. For it is not by himself that he makes himself good instead of evil; but it is of Him, and through Him, and in Him who is always good. And in order that he may not only be a good tree, but also bear good fruit, it is necessary for him to be assisted by the self-same grace, without which he can do nothing good. For God Himself cooperates in the production of fruit in good trees, when He both externally waters and tends them by the agency of His servants, and internally by Himself also gives the increase.45    1 Cor. iii. 7. A man, however, makes a corrupt tree when he makes himself corrupt, when he falls away from Him who is the unchanging good; for such a declension from Him is the origin of an evil will. Now this decline does not initiate some other corrupt nature, but it corrupts that which has been already created good. When this corruption, however, has been healed, no evil remains; for although nature no doubt had received an injury, yet nature was not itself a blemish. 46    [Here the phraseology contrasts vitium naturæ, with vitium natura.—W.]

CAPUT XIX.

20. Facit autem homo arborem bonam, quando Dei accipit gratiam. Non enim se ex malo bonum per se ipsum facit; sed ex illo et per illum et in illo qui semper est bonus: nec tantum ut arbor sit bona, sed etiam ut faciat fructus bonos, eadem gratia necessarium est ut adjuvetur, sine qua boni aliquid facere non potest. Ipse quippe in bonis arboribus cooperatur fructum, qui et forinsecus rigat atque excolit per quemlibet ministrum, et per se dat intrinsecus incrementum (I Cor. III, 7). Malam vero arborem homo facit, quando se ipsum malum facit, quando a bono incommutabili deficit: ab eo quippe defectus est origo voluntatis malae. Qui defectus non aliam naturam malam initiat , sed eam quae bona condita est vitiat. Sanato autem vitio nullum malum remanet; quia vitium naturae quidem inerat, sed vitium natura non erat.