Immediate action on the will, but resistible
Thesis XXX. 'If it is asked whether the Spirit has no direct action on the will, we do not deny that there is one. If it is asked whether grace works with the same kind of efficacy in quickening the intellect, the affections and the will, we answer that it does not: its way of acting on the will is resistible.'
They do not, however, seem to deny outright that grace produces some motions in the will irresistibly. On their assumptions this seems to be limited to the efficacy by which the will is made, without qualification, good from bad.
Latin
XXX. Si quaeratur, An nulla sit spiritus actio immediata in voluntatem? non diffitemur eam dari. Si quaeratur, An idem sit modus operandi quoad efficaciam gratiae in vivificatione intellectus, affectus & voluntatis? Respondemus non esse, sed modum agendi in voluntatem esse resistibilem. Nec tamen videntur simpliciter negare per gratiam quosdam motus irresistibiliter in voluntate produci, sed juxta eorum hypotheses, hoc videtur restringendum ad efficaciam illam, per quam voluntas simpliciter ex mala, bona redditur.