The Torah says Abraham took two of his young men. The Targum of Pseudo-Jonathan on Genesis 22:3 names them: Eliezer, the faithful servant, and Ishmael, the firstborn son whom Abraham had already sent away.
This is a stunning detail. Pseudo-Jonathan has brought Ishmael back into the household for this one journey. The older midrash (Bereshit Rabbah 56:2, compiled in the Land of Israel c. 300–500 CE) preserves the tradition that both sons walked with Abraham, and each one imagined the other would be chosen for sacrifice. Pseudo-Jonathan transmits the tradition in the Aramaic Targum itself.
The wood for the offering is also enumerated with unusual care: small wood, and figs, and palm. The three woods correspond, in midrashic tradition, to the three species deemed fit for altar fires — durable, slow-burning, free of worms.
The Targum of Pseudo-Jonathan will not let the reader glide past the preparation. Everything is specific. Two young men named. Three types of wood. A destination withheld.
The Maggidim drew the lesson from the precision: Abraham does not know where he is going, but he knows exactly what he is carrying. The takeaway: when the destination is hidden, ground yourself in the details you can prepare. Faith is also a matter of packing the right wood.