3 and 4. To them is a law fittingly given, who know what they are about, and have the alternative of doing a thing or leaving it undone. But that is proper to the rational creature only. Therefore the rational creature alone is conceptible of law.*
Hence it is said: I will give my law in their hearts (Jer. xxx, 33): I will write for him my manifold laws (Osee viii, 12).
3.113 : That the acts of the Rational Creature are guided by God, not merely to the realisation of the Specific Type, but also to the realisation of the Individual
3.115 : That the main purpose of the Divine Law is to subordinate Man to God