Exodus 6:7
6 Therefore, tell the Israelites, ‘I am the Lord. I will bring you out from your enslavement to the Egyptians, I will rescue you from the hard labor they impose, and I will redeem you with an outstretched arm and with great judgments. 7 I will take you to myself for a people, and I will be your God. Then you will know that I am the Lord your God, who brought you out from your enslavement to the Egyptians. 8 I will bring you to the land which I raised my hand to give21 to Abraham, to Isaac, and to Jacob—and I will give it to you as a possession. I am the Lord.’”
Ezekiel 34:30
29 I will prepare for them a healthy planting. They will no longer be victims of famine in the land and will no longer bear the insults of the nations. 30 Then they will know that I, the Lord their God, am with them and that they are my people, the house of Israel, declares the Sovereign Lord. 31 And you, my sheep, the sheep of my pasture, are my people, and I am your God, declares the Sovereign Lord.’”
Notes and References
"... As we turn to the specific relationship between God and Israel, we find that although there are many different forms of covenant in the Bible, the covenant between God and Israel is presented in terms of a basic “covenant formula.” This can be expressed in the form, “I ... will be your God, and you shall be my people” (e.g., Leviticus 26:12). This runs through the Bible like lettering through a stick of rock. As Rolf Rendtorff notes, “The linguistic formulations [of the covenant between God and Israel] are firmly fixed.” The recurrence of the covenant formula, together with the fact that the Hebrew Bible only ever refers to the word berit in the singular, makes it difficult to speak of different covenants — plural — between God and Israel. This suggests that it is more accurate to speak of a single covenant than a multiplicity of covenants. The idea of a single covenant is deeply rooted in Israel’s traditions. First, from the divine perspective, there is only one covenant. This is because although Israel breaks the covenant many times (compare Leviticus 26:15), God promises to keep the covenant (Leviticus 26:44). Second, God’s initial covenant with Abraham is referred to in “once-for-all” terms as an “everlasting covenant” (Genesis 17:7, 19), although of course it is true that different facets of it receive different emphases at different times ..."
Burnside, Jonathan P. God, Justice, and Society: Aspects of Law and Legality in the Bible (pp. 36-37) Oxford University Press, 2011