The history of Jonah contains a great mystery. For it seems that the whale signifies Time, which never stands still, but is always going on, and consumes the things which are made by long and shorter intervals. But Jonah, who fled from the presence of God, is himself the first man who, having transgressed the law, fled from being seen naked of immortality, having lost through sin his confidence in the Deity. And the ship in which he embarked, and which was tempest-tossed, is this brief and hard life in the present time; just as though we had turned and removed from that blessed and secure life, to that which was most tempestuous and unstable, as from solid land to a ship. For what a ship is to the land, that our present life is to that which is immortal. And the storm and the tempests which beat against us are the temptations of this life, which in the world, as in a tempestuous sea, do not permit us to have a fair voyage free from pain, in a calm sea, and one which is free from evils. And the casting of Jonah from the ship into the sea, signifies the fall of the first man from life to death, who received that sentence because, through having sinned, he fell from righteousness.
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Jonah spent three days and as many nights in the whale’s belly, and was delivered up sound again, so shall we all, who have passed through the three stages of our present life on earth—I mean the beginning, the middle, and the end, of which all this present time consists—rise again.
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For consider that God had images of Himself made as of gold, that is of a purer spiritual substance, as the angels; and others of clay or brass, as ourselves. He united the soul which was made in the image of God to that which was earthy. As, then, we must here honour all the images of a king, on account of the form which is in them, so also it is incredible that we who are the images of God should be altogether destroyed as being without honour. Whence also the Word descended into our world, and was incarnate of our body, in order that, having fashioned it to a more divine image, He might raise it incorrupt, although it had been dissolved by time.
— Methodius, Fragments from the Book on Resurrection. ANF06