Cap. X Arg. I: from adversaries' own descriptions of reprobation — absolute forescience of final impenitence/unbelief presupposes the decree to reprobate, so the decree does not flow from that foresight
First: we can argue from the definitions or descriptions of reprobation that keep turning up among our adversaries. From those themselves it is plain: absolute forescience of final impenitence and unbelief, as to this or that singular person, presupposes the decree to reprobate — and so that decree does not flow from that foresight.
Latin
Primo, argumentari possumus ab illis sive definitionibus sive descriptionibus reprobationis, quae subinde occurrunt apud adversarios nostros: Nam ex hisce ipsis perspicue concludi potest, Praescientiam absolutam finalis impoenitentiae et infidelitatis, quoad hanc aut illam personam singularem, praesupponere decretum reprobandi, ac proinde hoc decretum ex illa praevisione non manare.