The word dabar means "word" or "talk" in Hebrew.
Dabar occurs in various contexts in the Hebrew Bible

Hebrew Bible

The Hebrew Bible is a term used by biblical scholars outside of Judaism to refer to the Tanakh , a canonical collection of Jewish texts, and the common textual antecedent of the several canonical editions of the Christian Old Testament...

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In the Hebrew Bible, dabar is sometimes used in reference to the "Divine Word", and in an active sense as a "word event", or prophetic words.

In Christianity

Christianity

Christianity is a monotheistic religion based on the life and teachings of Jesus as presented in canonical gospels and other New Testament writings...

, the Old Testament

Old Testament

The Old Testament, of which Christians hold different views, is a Christian term for the religious writings of ancient Israel held sacred and inspired by Christians which overlaps with the 24-book canon of the Masoretic Text of Judaism...

 concept of "word event" represented by dabar carries over to the New Testament

New Testament

The New Testament is the second major division of the Christian biblical canon, the first such division being the much longer Old Testament....

 where revelation can be seen as events explained by words. Hence in the New Testament the word dabar continues to be more than a mere sound, or a doctrine, but refers to people and actions, reaching its climax in the Incarnation of Jesus.

The Septuagint, the oldest translation of the Hebrew Bible into Greek uses the terms Rhema

Rhema

Rhema literally means an "utterance" or "thing said" in Greek. It is a word that signifies the action of utterance.In philosophy, it was used by both Plato and Aristotle to refer to propositions or sentences....

 and Logos as equivalents and uses both for dabar.