Abraham lifts his eyes and sees a ram caught by its horns in a thicket. In Targum Pseudo-Jonathan on Genesis 22:13, the Aramaic adds the detail that places this animal outside ordinary time: it had been created between the evenings of the foundation of the world.
This is a reference to a famous tradition in Mishnah Avot 5:6, which lists ten objects created on the eve of the first Sabbath, at twilight — the borderland between Creation's six days and the seventh day's rest. Among them: the mouth of the earth that swallowed Korach, Balaam's talking donkey, Moses' staff, the manna, the rainbow — and the ram of Isaac.
The Targum of Pseudo-Jonathan is saying that the ransom for Isaac was not improvised. It was prepared before Abraham was born. Before Isaac was born. Before the world fully was.
Abraham does not hesitate. And Abraham went and took him, and offered him an offering instead of his son. The Aramaic word for instead of is chalaf — a substitution, an exchange. The ram dies in Isaac's place.
The Maggidim drew the principle for all generations: on Rosh Hashanah, when Jews blow the shofar made from a ram's horn, the horn remembered is this one. The takeaway: the way out was arranged before the trial began. When heaven asks you to climb the mountain, a ram is already waiting in the thicket.