Leviticus 26: 3-13
The Bible, specifically the Old Testament is filled with countless promises similar to the one above. God promises blessing if Israel is obedient to Him. If they will follow His commands, He will bless them. Moreover, the Old Testament is filled with instances where Israel is in fact disobedient to His commands, and in turn, God punishes them. This is a reoccurring pattern. God acts graciously to Israel and calls them to obedience, for a little while they are obedient and experience God's blessing, but then turn away from God and His immediate favor is removed, and repeat. So how does the story end.....
In God's steadfast love, God provides a way for Israel. Jesus comes to earth and lives the perfect life of obedience that Israel never could. He completely fulfills the law, and in doing so possesses perfect 'spiritual blessing'. Furthermore, God no longer gives his blessing through obedience. Rather, His people are blessed through faith Christ. We receive the blessings based on what Christ accomplished. Our perfect spiritual blessing hinges on the perfect obedience of another. This passage in Ephesians exults in a few of the blessings we have in Christ, mainly, adoption, being predestined, being lavished with grace, redemption from our temptations and an inheritance.
"Blessed be the God and Father of our Lord Jesus Christ, who has blessed us in Christ with every spiritual blessing in the heavenly places, 4 even as he chose us in him before the foundation of the world, that we should be holy and blameless before him. In love 5 he predestined us for adoption as sons through Jesus Christ, according to the purpose of his will, 6 to the praise of his glorious grace, with which he has blessed us in the Beloved. 7 In him we have redemption through his blood, the forgiveness of our trespasses, according to the riches of his grace, 8which he lavished upon us, in all wisdom and insight 9 making known to us the mystery of his will, according to his purpose, which he set forth in Christ 10as a plan for the fullness of time, to unite all things in him, things in heaven and things on earth."
Ephesians 1: 3-10