Whether any good works are necessary that man may receive happiness from God?

Objections

Objection 1 : It would seem that no works of man are necessary that he may obtain Happiness from God. For since God is an agent of infinite power, He requires before acting, neither matter, nor disposition of matter, but can forthwith produce the whole effect. But man's works, since they are not required for Happiness, as the efficient cause thereof, as stated above (Article [6]), can be required only as dispositions thereto. Therefore God who does not require dispositions before acting, bestows Happiness without any previous works.
Objection 2 : Further, just as God is the immediate cause of Happiness, so is He the immediate cause of nature. But when God first established nature, He produced creatures without any previous disposition or action on the part of the creature, but made each one perfect forthwith in its species. Therefore it seems that He bestows Happiness on man without any previous works.
Objection 3 : Further, the Apostle says (Rm. 4:6) that Happiness is of the man "to whom God reputeth justice without works." Therefore no works of man are necessary for attaining Happiness.