In his first epistle, Peter quotes Hosea 1.9-10 suggesting that the fulfilment of the Children of Israel being as the sand of the sea is found in the Gentile inclusion. Hosea hints at this and the New Testament confirms it in uncertain terms.
1 Peter 2 speaks of the disobedient who stumble - an indication of apostasy. The Holy Nation is now comprised of people who formerly were not a people but are now the people of God (echoing Hosea).
