If God is faithful to His covenants then can He reject His people?
Hosea 1:10 – However, in the future the number of the people of Israel will be like the sand of the sea which can be neither measured nor numbered. Although it was said to them, “You are not my people,” it will be said to them, “You are children of the living God!”
The commentary says that when a prophet would pronounce judgment on Israel, they would pull out the Abrahamic covenant. The attitude was “God said He would prosper us and He cannot go against His covenant”. They thought it was their birthright and they did not have to live by the law. So was the covenant with Israel or with God’s elect?
We see that the Apostle Paul in Romans shows that the covenant included Gentiles.
Even us, whom he has called, not only from the Jews but also from the Gentiles? As he also says in Hosea:
“I will call those who were not my people, ‘My people,’ and I will call her who was unloved, ‘My beloved.’ And in the very place where it was said to them, ‘You are not my people,’ there they will be called ‘sons of the living God.’ ”
Romans 9:24-26
If it was not based upon birthright, what was it based on? Maybe it is dependent on God who shows mercy?