The Midrash Tehillim, a collection of rabbinic interpretations on the Book of Psalms, dives deep into this very question, exploring the mysteries of the heavens. It offers us not just a poetic sentiment, but a glimpse into the ancient Jewish understanding of the cosmos.

One fascinating interpretation hinges on this idea: the heavens themselves are constantly telling God's story. They're a living testament to His creative power.

Now, how can we, down here on Earth, begin to understand these celestial declarations? Rabbi Shmuel bar Abba makes a bold claim. He says, "I am familiar with the heavenly realm just as I am familiar with the streets of Nehardea.” Nehardea was a well-known city in Babylonia, a place Rabbi Shmuel knew intimately.

Did Rabbi Shmuel actually take a trip up to the heavens? Well, no. The Midrash clarifies that it was through his intense study of Torah – that is, the teachings and wisdom within Jewish scripture – that he gained such profound knowledge of what exists beyond our world. Torah study, in this view, becomes a telescope, allowing us to peer into the divine architecture.

Think about that for a moment. The idea that immersing oneself in sacred text can grant insight into the very structure of the universe? It's a pretty powerful idea, isn't it?

But what exactly is this heavenly realm that the Psalms are talking about?

Rabbi Hoshaya offers another layer of understanding. He tells us, "Just as there is a space between the lower waters and the sky, there is also a space between the upper waters and the sky.”

Wait, "upper waters?" What's he talking about?

The Midrash directs us to Genesis 1:7, "And God made the expanse and separated the waters that were below the expanse from the waters that were above the expanse." Rabbi Pinchas HaKohen bar Chama elaborates, explaining that these "waters above the expanse" are dependent on the air and are responsible for producing rain, quoting Psalm 104:13: "He waters the mountains from his chambers; the earth is satisfied by the fruit of your work."

Again, we have Rabbi Hoshaya's profound understanding. Did he also literally ascend to the heavens? The Midrash makes the same point: No, it was through his dedicated study of Torah that he gained insight into the workings of the sky and the source of rain.

So, what do we take away from all this? It's more than just ancient cosmology. It's about the power of learning, the potential within sacred texts to unlock deeper truths about the world around us, and the constant dialogue between the heavens and the earth. Perhaps the heavens aren't just declaring God's glory. Perhaps they're inviting us to join the conversation, to seek understanding, and to be awed by the wonders of creation.