hebräisch
Hebrew
Relating to the Hebrew language, the Hebrew people, or the culture of Israel.
In ihrem Sprachkurs lernt sie gerade das hebräische Alphabet.
In her language course, she is currently learning the Hebrew alphabet.

Hebrew
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Hebrew
Relating to the Hebrew language, the Hebrew people, or the culture of Israel.
In ihrem Sprachkurs lernt sie gerade das hebräische Alphabet.
In her language course, she is currently learning the Hebrew alphabet.

As an adjective, 'hebräisch' (Hebrew) describes a noun and is written in lowercase in German unless it is at the beginning of a sentence. It must be declined like any adjective.
Sie interessiert sich für hebräische Literatur und Geschichte.
She is interested in Hebrew literature and history.
When the word refers to the language itself, it is used as the noun 'das Hebräisch' (Hebrew) and capitalized. In a sentence, it often appears without an article.
Er spricht fließend Hebräisch.
He speaks Hebrew fluently.
The construction 'auf Hebräisch' means 'in Hebrew'. This pattern with 'auf' + language is used for many languages.
Der Film wurde im Original auf Hebräisch gedreht.
The film was originally shot in Hebrew.
Jewish
'jüdisch' and 'hebräisch' often appear in the same cultural or religious context, but they do not mean the same thing. 'jüdisch' refers to the religion, culture, history, or origin of Jews. 'hebräisch' refers mainly to the Hebrew language and also to older historical or cultural contexts. The confusion happens easily because Hebrew is an important language in Judaism and in Israel. If you are talking about people, religion, or traditions, 'jüdisch' is usually correct. If you are talking about language, script, or a text, 'hebräisch' is often more precise.

In der Bibliothek sucht Paul ein hebräisches Wörterbuch.
In the library, Paul is looking for a Hebrew dictionary.
Meine Nachbarin lädt mich zu einem jüdischen Fest ein.
My neighbor is inviting me to a Jewish festival.