What Is Biblical Hebrew?

[phkrause]

Exploring the language of ancient Israel and Judah

Biblical Hebrew is the dialect of the Canaanite language used by the people of ancient Israel, and the primary language of the Hebrew Bible. It and the other regional dialects that make up this group—Ammonite, Moabite, Edomite, Phoenician, and so on—were mutually intelligible, meaning that a speaker of one of them could generally understand the others without difficulty.

https://www.biblicalarchaeology.org/daily/ancient-cultures/ancient-israel/what_is_biblical_hebrew/?

[Gregory Matthews]

Biblical Hebrew is the primary language of the manuscripts of the Old Testament.  A very small part of the manuscripts of the Old Testament are written in Aramaic.  Aramaic is closely related to Hebrew.  It has some differences in grammar with Hebrew. 

Koine Greek is the primary language of the manuscripts of the New Testament.  Koine Greek is the common spoken language of that time, which differs from classical Greek.