The Bible contains a promise from God to Abraham in Genesis 12:3 that says, "I will bless those who bless you, and him who dishonors you I will curse; and in you all the families of the earth shall be blessed." This promise was given to Abraham and extends to his descendants, who became the nation of Israel. Essentially, it means that God will bless those who bless Abraham and his descendants (Israel) and curse those who oppose them.
Additionally, Numbers 24:9 echoes a similar sentiment where it says, "Whoever blesses Israel will be blessed, and whoever curses Israel will be cursed," reinforcing this idea.
However, there is some theological discussion about the full meaning and application of this promise. Some interpretations emphasize that the ultimate fulfillment of God's blessing is through Jesus Christ (the true seed of Abraham) and the spiritual descendants (the church), rather than solely the modern political state of Israel.
In summary, the Bible does say that those who bless Israel will be blessed, based on God's covenantal promise to Abraham and reiterated through scripture passages like Genesis 12:3 and Numbers 24:9.
