The Torah tells us that Abraham did. But the story, like so many in our tradition, is layered with meaning, prompting centuries of interpretation and debate.

The scene is set in Genesis, chapter 18. Abraham is recovering, somewhat painfully, three days after circumcising himself at the ripe old age of 99. It's the hottest part of the day. And then, Adonai, the Lord, appears to him. (Gen. 18:1)

Now, what does that mean, "appears"?

The commentators have wrestled with this for ages. Rashi, for example, suggests that God was simply paying a sick visit, checking in on Abraham after his procedure. A divine bedside manner, if you will.

But the Zohar, that foundational text of Jewish mysticism, sees something far more profound. It describes this appearance as a mystical experience that utterly transforms Abraham, elevating him to the status of a full-fledged prophet. After this encounter, the Shekhinah – the Divine Presence – actually spoke from Abraham’s throat! God's presence, the Zohar tells us, remained with him. (Zohar l:97b-98a)

Before his circumcision, Abraham’s prophetic experiences were primarily visionary. But afterwards, the voice of prophecy issued directly from his lips. He enjoyed, in a sense, a greater measure of Ruach ha-Kodesh, the Holy Spirit. According to Tree of Souls (Schwartz), the Voice of God was revealed in his speech.

It wasn't just a one-way street, either. After this, Abraham could not only receive messages from God, but he could also initiate communication with God. He had become holier, capable of receiving a divine visit while fully awake, even in the heat of the day. He was able to absorb a vision of God in His superior light.

The text emphasizes that this vision was different, of a "superior nature" compared to previous ones. After the circumcision, Abraham attained the fullest possible prophetic vision. Just as God had shown Adam each generation and its leaders, God now showed them to Abraham, along with each generation’s sages.

And here's where it gets even more intriguing. Some traditions suggest that God manifested Himself to Abraham by means of a tree, since the vision took place at the terebinths of Mamre. Why a tree? Midrash Rabbenu Bahya on Genesis 18:1 suggests it was to show Abraham that, like an old tree, he could still bear fruit, even in his old age.

The symbolism of the tree runs deep. As Proverbs (3:18) tells us, the Torah is a "tree of life to those who grasp her." And since God is so closely linked to the Torah, some interpretations suggest that any identification of the Torah with a tree might, at the same time, apply to God. It also might be important to recall that the Canaanite goddess Asherah was linked to sacred groves, and therefore identified with a tree.

There’s even a fascinating debate about who actually performed the circumcision. Genesis 17:24 seems clear: Abraham did it himself. But Rabbi Levi, in Genesis Rabbah 47:9, asserts, "It is not written here that Abraham circumcised himself, but rather that he was circumcised by God." And Zohar 1:96b describes Abraham throwing himself on his face, God speaking to him, and when Abraham arose, he found himself already circumcised! A miraculous act.

What are we to make of all this? Perhaps the key takeaway is the transformative power of covenant. Abraham's act of commitment, his willingness to embrace the physical mark of his relationship with God, opened him up to a deeper, more profound connection with the Divine. It allowed him to not only hear God's voice, but to speak back. To become a true partner in the ongoing story of creation.

And maybe, just maybe, it reminds us that even in the hottest, most uncomfortable moments of our lives, we too can open ourselves to the possibility of encountering the Divine.