Whether mercy is the greatest of the virtues?

Objections

Objection 1 : It would seem that mercy is the greatest of the virtues. For the worship of God seems a most virtuous act. But mercy is preferred before the worship of God, according to Osee 6:6 and Mt. 12:7: "I have desired mercy and not sacrifice." Therefore mercy is the greatest virtue.
Objection 2 : Further, on the words of 1 Tim. 4:8: "Godliness is profitable to all things," a gloss says: "The sum total of a Christian's rule of life consists in mercy and godliness." Now the Christian rule of life embraces every virtue. Therefore the sum total of all virtues is contained in mercy.
Objection 3 : Further, "Virtue is that which makes its subject good," according to the Philosopher. Therefore the more a virtue makes a man like God, the better is that virtue: since man is the better for being more like God. Now this is chiefly the result of mercy, since of God is it said (Ps. 144:9) that "His tender mercies are over all His works," and (Lk. 6:36) Our Lord said: "Be ye . . . merciful, as your Father also is merciful." Therefore mercy is the greatest of virtues.