Weinfeld, M. (1970). "The Covenant of Grant in the Old Testament and in the Ancient near East". Journal of the American Oriental Society. 90 (2): 196–199. doi:10.2307/598135. JSTOR598135.
Mendenhall, George E. (September 1954). "Covenant Forms in Israelite Tradition". The Biblical Archaeologist. 17 (3). New Haven, Conn.: The American Schools of Oriental Research: 70–73. doi:10.2307/3209151. JSTOR3209151. S2CID166165146.
jewishencyclopedia.com
Jewish Encyclopedia: Phinehas: "...for this act he was approved by God and was rewarded with the divine promise that the priesthood should remain in his family forever (Num. xxv. 7–15)."
Jewish Encyclopedia: Covenant: "The term "berit" ... refers chiefly to God's covenant made with Israel, and with Abraham, Isaac, Jacob, Moses, Aaron, Phineas, and David (Derek Ereẓ Zuṭa, i., end)."
jstor.org
Weinfeld, M. (1970). "The Covenant of Grant in the Old Testament and in the Ancient near East". Journal of the American Oriental Society. 90 (2): 196–199. doi:10.2307/598135. JSTOR598135.
Mendenhall, George E. (September 1954). "Covenant Forms in Israelite Tradition". The Biblical Archaeologist. 17 (3). New Haven, Conn.: The American Schools of Oriental Research: 70–73. doi:10.2307/3209151. JSTOR3209151. S2CID166165146.
mechon-mamre.org
Genesis 17:11–13 And ye shall circumcise the flesh of your foreskin; and it shall be a token of the covenant betwixt me and you. And he that is eight days old shall be circumcised among you, every man child in your generations, he that is born in the house, or bought with money of any stranger, which is not of thy seed. He that is born in thy house, and he that is bought with thy money, must needs be circumcised: and my covenant shall be in your flesh for an everlasting covenant.
Mendenhall, George E. (September 1954). "Covenant Forms in Israelite Tradition". The Biblical Archaeologist. 17 (3). New Haven, Conn.: The American Schools of Oriental Research: 70–73. doi:10.2307/3209151. JSTOR3209151. S2CID166165146.
This definition of covenant is from O. Palmer Robertson's book The Christ of the Covenants. It has become an accepted definition among modern scholars. See this critical review of his book by Dr. C. Matthew McMahon.