Whether grace is fittingly divided into sanctifying grace and gratuitous grace?

Objections

Objection 1 : It would seem that grace is not fittingly divided into sanctifying grace and gratuitous grace. For grace is a gift of God, as is clear from what has been already stated (Question [110], Article [1]). But man is not therefore pleasing to God because something is given him by God, but rather on the contrary; since something is freely given by God, because man is pleasing to Him. Hence there is no sanctifying grace.
Objection 2 : Further, whatever is not given on account of preceding merits is given gratis. Now even natural good is given to man without preceding merit, since nature is presupposed to merit. Therefore nature itself is given gratuitously by God. But nature is condivided with grace. Therefore to be gratuitously given is not fittingly set down as a difference of grace, since it is found outside the genus of grace.
Objection 3 : Further, members of a division are mutually opposed. But even sanctifying grace, whereby we are justified, is given to us gratuitously, according to Rm. 3:24: "Being justified freely [gratis] by His grace." Hence sanctifying grace ought not to be divided against gratuitous grace.