God fits the call to each person's temper and moment
Thesis CXXVI. He explains this in the next paragraph: 'Through his infinite knowledge God knows with complete certainty what each person would do in this or that state of affairs: whether he would consent or not, and what manner of calling would be suitable for him not merely to be urged but to be won over. Plainly the ambitious man is moved one way and the greedy man another, and so with the rest. To the ambitious it is useful to point out how unstable human affairs are, since many have been suddenly thrown down from the very height of honour; to the greedy, the shortness of life and the uncertain hour of death, and so on. And because temperaments differ among the ambitious, and likewise among the greedy, some must be shown examples, others reasons drawn from philosophy or theology, others comparisons taken from more familiar things, so that each is brought to repentance by his own route.
Indeed one and the same person differs from himself from day to day, from hour to hour, from moment to moment. Now anger grips him, now joy, now sorrow; so today he must be moved and stirred in another way than yesterday, and reasons that would have persuaded him effectively in one hour may prove useless in the next. So true is it that whatever is received is received in the manner of the one receiving it, and that things do not always look the same to us; the end appears to each of us according to how we are disposed. At times, then, because of circumstances of place or time and because of the various passions that stir him, a person is so disposed that a given thought or illumination of the mind, and a given affection or motion of the will, are duly fitted to him and attuned to bringing about his conversion. The efficacy of grace must therefore be located in this attunement between the aid and the will so disposed.'
Latin
CXXVI. Hoc autem sic explicat paragrapho sequenti. Deus, inquit, per scientiam suam infinitam, certissime novit quid unusquisque homo facturus sit, posito hoc aut illo rerum statu: An consensum daturus, necne; & quis modus vocationis idoneus, non tantum ut homo suadeatur, sed etiam ut persuadeatur: aliter enim constat moveri ambitiosum, aliter avarum, & sic de aliis. Ambitioso expedit proponere rerum humanarum inconstantiam, qua multi ex summo honorum culmine repente dejecti sunt. Avaro vitae brevitatem, & incertam mortis horam, &c. Et quia inter ambitiosos diversa sunt ingenia, item inter avaros; uni proponenda sunt exempla, alii rationes ex Philosophia, vel Theologia desumptae, alii similitudines ex rebus notioribus captae; ut ita unus isto, alius alio modo ad poenitentiam inducatur. Imo vero unus & idem homo diversis diebus, horis, ac momentis alius est a seipso: Nunc ira, nunc gaudio, nunc tristitia afficitur; unde aliter hodie movendus & excitandus ac heri: & quae rationes efficaciter una hora suasissent, altera fortasse erunt inutiles: adeo verum est, quicquid recipitur ad modum recipientis recipi, nec omnia nobis eadem semper apparere, sed prout quisque affectus est, talem ei finem videri. Itaque homo interdum, tum propter circumstantias loci, aut temporis; tum propter varios passionum affectus, quibus agitatur, ita dispositus est, ut talis cogitatio seu illustratio intellectus, & talis affectus seu motio voluntatis sint illi debite accommodata, & contemperata ad conversionem illius perficiendam: quare in tali contemperatione auxilii & voluntatis sic dispositae, efficacia gratiae constituenda est.