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The Hebrew Bible records the covenant of the pieces or covenant between the parts (Hebrew: ברית בין הבתרים, romanized: Brit Bein HaBetarim), also called the "biblical land covenant", which is seen as an important event in Jewish History. In this central narrative God revealed himself to Abrah (later Abraham) and made a covenant with him, in which God announced to Abraham that his descendants would eventually inherit the Land of Israel. According to Jewish tradition, the location was at Mount Betarim, in the Anti-Lebanon mountains.
This was the first of a series of covenants made between God and the Patriarchs.
General info from Wikipedia.org