Cap. III Sol. Rat. 7: Lazarus analogy — no duty to raise all equally
Just as it would be foolish to argue: if Christ on earth raised dead Lazarus from his own good pleasure, and not from foresight of any cooperation on Lazarus's part, then he would have raised all the dead alike, because all were equally disposed to receive that gift of raising — so Gregory's prior argument is invalid and inept. It assumes God is bound, whenever he acts from good pleasure, to deal alike with equals; and it posits a common disposition to receive election in people who are commonly disposed to receive damnation's punishment.
Latin
Sicuti ergo inepta esset haec argumentatio, Si Christus in terris agens mortuum Lazarum resuscitavit ad vitam ex mero beneplacito voluntatis suae, et non ex praevisione alicujus cooperationis ex parte Lazari, tum omnes mortuos ex aequo resuscitasset, quia omnes aeque dispositi fuerant ad hoc donum resuscitationis recipiendum; sic etiam et prior illa Gregorii invalida et inepta est; quia supponit obligationem in Deo, ut quoties agit ex beneplacito, agat pariter cum paribus; et quia ponit communem dispositionem in hominibus ad recipiendum donum electionis, qui sunt communiter dispositi ad recipiendam poenam damnationis.