Tertullian

One [Elijah] whose “heart” was habitually found “lifted up” rather than fattened up, who in forty days and as many nights maintained a fast above the power of human nature while spiritual faith supplied strength (to his body), both saw with his eyes God’s glory, and heard with his ears God’s voice and understood with his heart God’s law, while he taught him even then (by experience) that humankind lives not on bread alone but on every word of God; in that the people, though fatter than he, could not constantly contemplate even Moses, fed as he had been on God, or his leanness, sated as it had been with God’s glory! Deservedly, therefore, even while in the flesh, did the Lord show himself to him, the colleague of his own fasts, no less than to Elijah. For Elijah had, by this fact primarily, that he had imprecated a famine, already sufficiently devoted himself to fasts: “The Lord lives,” he said, “before whom I am standing in his sight, if there shall be dew in these years and rain shower.” Subsequently, fleeing from threatening Jezebel, after one single meal of food and drink, which he had found on being awakened by an angel, he too, in a space of forty days and nights, his belly empty, his mouth dry, arrived at Mount Horeb; where, when he had made a cave his inn, with how familiar a meeting with God was he received! “What are you doing here, Elijah?” Much more friendly was this voice than, “Adam, where are you?” For the latter voice was uttering a threat to a fed man, the former soothing a fasting one. Such is the prerogative of circumscribed food, that it makes God tent fellow with a man—peer, in truth, with peer! For if the eternal God will not hunger, as he testifies through Isaiah, this will be the time for a person to be made equal with God, when he lives without food.

We indeed, who know for certain that Christ always spoke in the prophets, as the Spirit of the Creator (for so says the prophet, “The person of our Spirit, Christ the Lord,” who from the beginning was both heard and seen as the Father’s vicegerent in the name of God). We are well aware that his words, when upbraiding Israel, were the same as those that it was foretold that he should denounce against him: “You have forsaken the Lord and have provoked the holy One of Israel to anger.” If, however, you would rather refer to God the whole imputation of Jewish ignorance from the first, instead of to Christ, through an unwillingness on their part to allow that even in ancient times the Creator’s word and Spirit—that is to say, his Christ—was despised and not acknowledged by them, you will even in this subterfuge be defeated. For when you do not deny that the Creator’s Son and Spirit and Substance is also his Christ, you must allow that those who have not acknowledged the Father have failed likewise to acknowledge the Son through the identity of their natural substance; for if in Its fullness It has baffled human understanding, much more has a portion of It, especially when partaking of the fullness. Now, when these things are carefully considered, it becomes evident how the Jews rejected Christ and killed him; not because they regarded him as a strange Christ but because they did not acknowledge him, as though he were their own. For how could they have understood the strange One, concerning whom nothing had ever been announced, when they failed to understand him about whom there had been a perpetual course of prophecy? That admits of being understood or being not understood, which, by possessing a substantial basis for prophecy, will also have a subject matter for either knowledge or error; while that which lacks such matter admits not the issue of wisdom. So that it was not as if he belonged to another god that they conceived an aversion for Christ and persecuted him, but simply as a man whom they regarded as a wonder-working juggler and an enemy in his doctrines. They brought him therefore to trial as a mere man and one of themselves too—that is, a Jew (only a renegade and a destroyer of Judaism)—and punished him according to their law. If he had been a stranger, indeed, they would not have sat in judgment over him. So far are they from appearing to have understood him to be a strange Christ, that they did not even judge him to be a stranger to their own human nature.