The same prophet was commanded to represent the state of the church by packing his belongings to take into exile and traveling to another place in the sight of the children of Israel. In a while he was to take out his belongings and leave in the evening through a hole dug through the wall, covering his face so that he could not see the ground. And this was to be a sign to the house of Israel. The prophet was also to say, “Behold, I am a sign for you: what I have done, [your leaders] will do” (Ezekiel 12:3–7, 11).
The prophet Hosea was commanded to represent the state of the church by taking a whore as his wife. He did so, and she bore him three children, the first of whom he named Jezreel, the second No Mercy, and the third Not My People (Hosea 1:2–9). Another time he was commanded to go love a woman who had a lover but was also committing adultery; he bought her for fifteen pieces of silver (Hosea 3:1, 2).
The prophet Ezekiel was commanded to represent the state of the church by taking a clay tablet, carving Jerusalem on it, laying siege to it, building a siege wall and a mound against it, putting an iron plate between himself and the city, and lying on his left side for three hundred ninety days and then on his right side [for forty days]. He was also told to take wheat, barley, lentils, millet, and spelt and make himself bread from them, which he was then to weigh and eat. He was also told to bake a cake of barley over human dung; and because he begged not to do this, he was commanded to bake it over cow dung instead (Ezekiel 4:1–15).
Further, prophets also represented other things—Zedekiah with the horns of iron that he made, for example (1 Kings 22:11). Then there was another prophet who was struck and wounded and who put ashes over his eyes (1 Kings 20:37, 38).
In general, prophets used a robe of coarse hair (Zechariah 13:4) to represent the Word in its outermost meaning, which is the literal meaning; so Elijah wore that kind of robe and had a leather belt around his waist (2 Kings 1:8). Much the same is true of John the Baptist, who had clothing of camels’ hair and a leather belt around his waist, and who ate locusts and wild honey (Matthew 3:4).
We can see from this that the prophets represented the state of the church and the Word. In fact, anyone who represents one represents the other as well because the church is from the Word, and its life and faith depend on its acceptance of the Word. So too, wherever prophets are mentioned in both Testaments it means the body of teaching the church draws from the Word, while the Lord as the supreme prophet means the church itself and the Word itself.
from The Lord, Section 15