The Targum Pseudo-Jonathan marks the arrival at Sinai with three extraordinary words: "They had journeyed from Rephidim, and had come to the desert of Sinai, and Israel encamped there in the desert, of one heart, nigh to the mountain" (Exodus 19:2).
The Aramaic phrase "of one heart" — b'lev echad — is one of the most celebrated additions in the entire Targumic tradition. The Hebrew says only that Israel encamped. The Aramaic says they encamped as one.
Rashi's comment on this verse, drawing from the Mekhilta, famously says: "as one man, with one heart." After weeks of complaining about water, bread, and leadership, after the near-revolt at Rephidim, after the battle with Amalek, the twelve tribes finally stood in a single camp with a single pulse. Not identical. Not unanimous. But unified.
The rabbis take this to be the prerequisite for receiving the Torah. Unity came before revelation, not after it. The Aseret haDibrot would not descend on a fractured people. Sinai required a nation that had learned, even briefly, to breathe together.
The encampment is also "nigh to the mountain" — close, expectant, ready. Israel had arrived at the threshold. The takeaway: the great revelations of a life do not come to the divided heart. They come to the heart that has quieted its internal factions enough to stand still at the base of the mountain.