wikipedia on Hebrew comments that Hebrew is an Afro-Asiatic language. This language family is generally thought by linguists to have originated somewhere in northeastern Africa, and began to diverge around the 8th millennium BCE, although there is much debate about the exact date and place. (The theory is espoused by most archeologists and linguists, but at odds with traditional reading of the Torah.) One branch of this family, Semitic, eventually reached the Middle East; it gradually differentiated into a variety of related languages.

The common ancestor of Hebrew and Phoenician is called Canaanite, and was the first to use a Semitic alphabet distinct from Egyptian. One ancient Canaanite document is the famous Moabite Stone; the Siloam Inscription, found near Jerusalem, is an early example of Hebrew. Less ancient samples of Old Hebrew include the ostraka found near Lachish which describe events preceding the final capture of Jerusalem by Nebuchadnezzar and the Babylonian captivity of 586 BCE.

The most famous work originally written in Hebrew is the Hebrew Bible, though the time at which it was written is a matter of dispute (see dating the Bible for details). The earliest extant copies were found among the Dead Sea Scrolls, written between the 2nd century BCE and the 1st century CE.