Thesis XXIII. In this question, however, they do not give the name 'grace of Christ' to the helps of the natural order that God does not refuse even to unbelievers who remain in their unbelief.
They call grace of Christ only the grace that begins with faith, and not with faith of just any kind, but with Christian faith infused by God, which is not idle and dead but begins to work through love.
Latin
XXIII. Caeterum in hac quaestione, gratiae Christi nomine non dignantur auxilia illa ordinis naturalis quae Deus non denegat infidelibus ipsis in infidelitate sua permanentibus: Sed gratiam Christi vocant eam duntaxat quae incipit a fide, & ea non qualicunque, verum Christiana & divinitus infusa, quaeque iners & mortua non sit, sed quae per dilectionem operari incipiat.