Whether a man in grace can merit eternal life condignly?

Objections

Objection 1 : It would seem that a man in grace cannot merit eternal life condignly, for the Apostle says (Rm. 8:18): "The sufferings of this time are not worthy [condignae] to be compared with the glory to come, that shall be revealed in us." But of all meritorious works, the sufferings of the saints would seem the most meritorious. Therefore no works of men are meritorious of eternal life condignly.
Objection 2 : Further, on Rm. 6:23, "The grace of God, life everlasting," a gloss says: "He might have truly said: 'The wages of justice, life everlasting'; but He preferred to say 'The grace of God, life everlasting,' that we may know that God leads us to life everlasting of His own mercy and not by our merits." Now when anyone merits something condignly he receives it not from mercy, but from merit. Hence it would seem that a man with grace cannot merit life everlasting condignly.
Objection 3 : Further, merit that equals the reward, would seem to be condign. Now no act of the present life can equal everlasting life, which surpasses our knowledge and our desire, and moreover, surpasses the charity or love of the wayfarer, even as it exceeds nature. Therefore with grace a man cannot merit eternal life condignly.