"[N]othing could have been devised more likely to instruct and benefit the pious reader of sacred Scripture than that, besides describing praiseworthy characters as examples, and blameworthy characters as warnings, it should also narrate cases where good men have gone back and fallen into evil, whether they are restored to the right path or continue irreclaimable; and also where bad men have changed, and have attained to goodness, whether they persevere in it or relapse into evil; in order that the righteous may be not lifted up in the pride of security, nor the wicked hardened in despair of cure" (Against Faustus 22:96 [A.D. 400]).Augustine AGAINST Calvinist's false belief that one cannot lose one's salvation: it should also narrate cases where good men have gone back and fallen into evil, whether they are restored to the right path or continue irreclaimable
Augustine wrote conflicting statements on whether or not a man could lose his salvation.
Regardless, Augustine was just a man. Where he was in alignment with Scripture, he was correct. Where he wasn’t, he wasn’t.
Read his “Predestination of the Saints” and see how much you agree with it.