Both Uses of

Judaism
in
Blink, by Malcolm Gladwell

Fisman is Jewish.†
Chpt 2 *

Jewish = of Judaism (the oldest of the three major monotheistic religions) or it's culture

Apparently all you need is three to get into Jewish heaven, so I'm well on my way.†
Chpt 2

Definition:

the oldest of the three major monotheistic religions -- having its spiritual and ethical principles embodied chiefly in the Torah and in the Talmud

The Christian Old Testament closely corresponds to the Hebrew (Jewish) Bible.