Matthew 24:7

And there shall be, according to the proverb, Greek: loimos meta limon, plague after famine, both natural daughters of war, with intestine divisions, earthquakes, and other calamities; the third sign.... As the bodies of men generally grow weak and faint previous to dissolution, so will it be with the earth before the destruction of the world; so that this inferior globe will be shaken with unusual convulsions, as if making its last effort for existence. The air filled with destructive vapours will turn to the ruin of men, and the earth exhausted of its natural fertility, will refuse its accustomed support to the sons of Adam. Hence will arise wars and famines, insurrections, rebellions, and mobs; some driven on by famine and want, others by ambition and avarice. But if the corrupted heart of man shall refuse to depart from its evil ways, these calamities shall be increased; for all these are only the beginnings of more dreadful sorrows. (Origen)