_Bereshith Rabba_, chap. 95.

The masters of the Kabbalah, of blessed memory, say that Abraham's
Rabbi, i.e., teacher, was the angel Zadkiel.

_Rabbi Menachem's comment on the Pent._, Exod. iii. 5.

Adam's book, which contained celestial mysteries and holy wisdom, came
down as an heirloom into the hands of Abraham, and he by means of it was
able to see the glory of his Lord.

_Zohar Parashah Bereshith._

Abraham was the author of a treatise on the subject of different kinds
of witchcraft and its unholy workings and fruits, as also of the Book of
Creation, through holy names (by means of which, namely, anything could
be created).

_Nishmath Chayim_, chap. 29.

The whole world once believed that the souls of men were perishable, and
that man had no pre-eminence above a beast, till Abraham came and
preached the doctrine of immortality and transmigration.

Ibid., fol. 171, col. 1.

A good son delivers his father from the punishment of hell, for thus we
find that Abraham our father delivered Terah, as it is said in Gen. xv.
15, "And thou shalt go to thy fathers in peace." This implies that God