1. Creation and covenant: “Know that YHWH is God! He created us, and we belong to him; we are his people, the sheep in his pasture.” (Psa 100.3) He created us, and we are his people.
By the way, sometimes I still found it fascinating that our forefathers in faith, the patriarchs, were nomadic pastoralists (well, we call our church leaders pastors, anyway). They were basically the nobodies in the ancient world. Indeed, the nomadic pastoralists are the nobodies in our contemporary world as well. I guess they really understand that settlement is not an option. They are always on the move.
2. Redemption (i.e., the exodus from Egypt) as the basis of ethics (and the ground of covenant): “Remember that you were slaves in Egypt and YHWH your God redeemed you from there. That is why I command you to do this.” (Deu 24.18, 22) And many more throughout the Deuteronomy.
3. Bi-partite covenant: “You have declared this day that YHWH is your God… and YHWH has declared this day that you are his people.” (Deu 26.17-18) And that the covenant is mediated by Moses.