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.
The promises in the covenant with Abraham are unconditional. In other words – they do not depend on Israel´s performance. Individual persons can miss the blessings by being disobedient, but God continues with His covenant.