The prophet Isaiah did. And his vision, described in the Book of Isaiah (6:1-8), has shaped Jewish understandings of God, heaven, and the very nature of holiness for millennia.

Imagine this: It’s the year King Uzziah died. Isaiah finds himself in a vision, beholding Adonai, my Lord, seated on a throne, not just any throne, but one "high and lofty." And the skirts of His robe, they filled the entire Temple. Which temple are we talking about here? Well, the presence of angels whose sole purpose is to glorify God suggests it’s the heavenly Temple, a concept this passage helps establish. A home for God and the angels in the heavens.

Around the throne stood the seraphim. These weren't your fluffy, cherubic angels. They were beings of pure light and power, each with six wings. Two wings covered their faces, perhaps shielding themselves from the unbearable radiance of God's presence. Two covered their legs, a gesture of humility and reverence. And with the final two, they flew.

Their voices, calling out to one another, shook the very foundations: "Kadosh, kadosh, kadosh, Adonai Tzva’ot! M’lo chol ha’aretz k’vodo!" “Holy, holy, holy! The Lord of Hosts! His presence fills all the earth!" The doorposts trembled, and the House filled with smoke.

Overwhelmed, Isaiah cries out, "Woe is me; I am lost! For I am a man of unclean lips and I live among a people of unclean lips; yet my own eyes have beheld the King, Adonai Tzva’ot." He's confronted by his own imperfection, his own unworthiness in the face of such absolute holiness. It’s a raw, human moment of self-awareness.

But the vision doesn't end there. One of the seraphim flies toward Isaiah, carrying a live coal taken from the altar with tongs. Can you feel the heat just imagining it? The seraph touches the coal to Isaiah’s lips and says, "Now that this has touched your lips, your guilt shall depart and your sin be purged away." This moment establishes a profound pattern of interaction between humanity and the divine, complete with a motif of a healing stone. We actually find a similar idea in the Talmud (B. Bava Batra 16b), where Abraham is said to have worn a glowing stone around his neck that healed anyone who looked at it.

And then, Isaiah hears the voice of Adonai, asking, "Whom shall I send? Who will go for us?" Without hesitation, Isaiah responds, "Here am I; send me." It’s a moment of complete surrender, of willingness to serve. It's a powerful affirmation of faith.

Isaiah's vision, in its incredible detail, became a blueprint for later Jewish mystical thought. Rabbinic texts and non-canonical books like the Books of Enoch expand on the geography of heaven, the names and roles of angels, and the nature of God. Later, Kabbalistic and Hasidic literature would further develop these heavenly geographies. We can see echoes of this vision in other texts too, like Daniel 7:9-10, which also portrays God seated upon a heavenly throne.

What does Isaiah's vision tell us? It tells us that even in our imperfection, we can be called to service. It tells us that the Divine is both awe-inspiring and intimately involved in our lives. And it tells us that even a single moment of witnessing the Holy can transform us forever.