Hebrew is a proper noun. Hebrew is (1) the ancient Canaanitic language of the Hebrews that has been revived as the official language of Israel, (2) a person belonging to the worldwide group claiming descent from Jacob (or converted to it) and connected by cultural or religious ties.
The following articles provide more information about the proper noun Hebrew.
The Bible is comprised of 66 books; 39 in the Old Testament, and 27 in the New Testament. The Old Testament was written in Hebrew and the New Testament was written in Greek.
The following digital image illustrates the proper noun Hebrew.