All things, indeed, are believed to be, either because of experience, or on grounds of reason, or from similar instances, or because it is fitting that they be, and each of these supports our belief. Experience teaches us that we are moved; reason, that which moves us must be considered the property of another power; similar instances show that the field has borne crops, and therefore we expect that it will continue to bear them. Fitness, because even where we do not think that there will be results, yet we believe that it is by no means fitting to give up the works of virtue.

Each, then, is supported by each. But belief in the resurrection is inferred most clearly on three grounds, in which all are included. These are reason, analogy from universal example, and the evidence of what has happened, since many have risen. Reason is clear. For since the whole course of our life consists in the union of body and soul, and the resurrection brings with it either the reward of good works, or the punishment of wicked ones, it is necessary that the body, whose actions are weighed, rise again. For how shall the soul be summoned to judgment without the body, when account has to be rendered of the companionship of itself and the body?

Rising again is the lot of all, but there is a difficulty in believing this, because it is not due to our deserts, but is the gift of God. The first argument for the resurrection is the course of the world, and the condition of all things, the series of generations, the changes in the way of succession, the setting and rising of constellations, the ending of day and night, and their daily succession coming as it were again to life. And no other reason can exist for the fertile temperament of this earth, but that the divine order restores by the dews of night as much of that moisture from which all earthly things are produced, as the heat of the sun dries up by day. Why should I speak of the fruits of the earth? Do they not seem to die when they fall, to rise again when they grow green once more? That which is sown rises again, that which is dead rises again, and they are formed once more into the same classes and kinds as before. The earth first gave back these fruits, in these first our nature found the pattern of the resurrection. — Two Books on the Decease of His Brother Saytrus – Book II, para. 51-53.