It nourishes their enthusiasm, it makes them "forget the things that are on earth, and reach forward unto the things" which are in another world.

It renders them useless here below, and makes them firmly believe that God will recompense in heaven, the pains they have taken to make themselves miserable on earth.

How can a man, occupied with such expectations of heavenly happiness, concern himself at all with, or for, the actual and present happiness of those around him, while he is indifferent as to his own?
And how can he help this, when he believes that "friendship with the world is enmity with God ?" The third virtue is charity.

We have elsewhere said, that if universal love or charity means only general benevolence, and a desire to makes others happy, and to do them good, all this is commanded by reason and the ancient revelation; but if by this precept it is commanded to love those who hate, oppress or insult us, we do not at all scruple to assert, that the thing is impossible, and unnatural.

For, though we can abstain from hurting our enemy; or even can do him good, we cannot really love him.