God has a unique relationship with Israel. He entered into covenants with Israel. They are a permanent connection between God and Israel. The first covenant is the covenant with Abraham. The covenant contains three promises: a land, a people and a blessing. All the other covenants build on this covenant.
God has chosen Israel and has a covenant relationship with her. “For you are a people holy to the LORD your God. The LORD your God has chosen you out of all the peoples on the face of the earth to be his people, his treasured possession.” Deuteronomy 7:6