Strong's #2454: Ioudaismos (pronounced ee-oo-dah-is-mos')

from 2450; "Judaism", i.e. the Jewish faith and usages:--Jews' religion.

Thayer's Greek Lexicon:

̓̈́́

Ioudaismos

1) the Jewish faith and worship, religion of the Jews, Judaism

Part of Speech: noun masculine

Relation: from G2450

Citing in TDNT: 3:356, 372

Usage:

This word is used 2 times:

 

Galatians 1:13: "in time past in the Jews' religion, how that beyond measure I persecuted"
Galatians 1:14: "profited in the Jews' religion above many my equals in"