Isaiah 48:19

Israel could also have enjoyed the blessings promised to Abraham more fully, and sooner, than she has. Israel’s identity as a nation among other nations ceased because of her sin, but her identity as the chosen people of God did not. This verse does not teach that the future fulfillment of the promises to Abraham was contingent on Israel’s obedience. God gave those promises unconditionally (cf. Genesis 12:1-3; Genesis 12:7; Genesis 15:5; Genesis 22:17). It does reflect that the present enjoyment of those benefits depended on her obedience (cf. Deuteronomy 28-29).