25 This is why the heathen rage and the peoples imagine vain things; why tree is set over against tree, hands against hand, the one stretched out in self indulgence, the others in generosity; the one unrestrained, the others fixed by nails, the one expelling Adam, the other reconciling the ends of the earth. This is the reason of the lifting up to atone for the fall, and of the gall for the tasting, and of the thorny crown for the dominion of evil, and of death for death, and of darkness for the sake of light, and of burial for the return to the ground, and of resurrection for the sake of resurrection. All these are a training from God for us, and a healing for our weakness, restoring the old Adam to the place whence he fell, and conducting us to the tree of life, from which the tree of knowledge estranged us, when partaken of unseasonably, and improperly.
Source: Orations (New Advent)