Romans 11:13-16

I think a key to understanding what Paul is saying here is recognizing what the word holy means in this context. The nation of Israel was “set apart” and “consecrated” for God's purposes. They have a specific calling, if you will, and God remains faithful to His promises and proclamations concerning them as a people, even though individual descendants of Abraham have been unfaithful.

Their unfaithfulness does not nullify God's faithfulness to the purposes for which He set apart the nation of Israel.

The door remains open to the Jews; however, they must enter through the true Gate—Jesus Christ—by faith, just as their patriarchal father, Abraham, was counted righteous through faith.

God's purposes for Israel remain, yet He has also opened the door for the Gentiles to share in the covenant blessings promised to Abraham through faith. This is something Paul hoped would provoke the Jews to jealousy. After all, how is it that a people who were once considered outsiders are now enjoying the very blessings promised to Israel? Yet God had warned them that He would provoke them to jealousy through those who were not considered His people because of their rebellion and unbelief.

Salvation is received by faith—period.

Think about how Cain felt toward Abel after Abel's offering was accepted and his was not. God's words to Cain were plain. Basically, do what is right and you will be accepted. Refuse to do what is right, and sin is crouching at the door, eager to master you. And we know where allowing sin to rule over us ultimately leads—death.

That is a decision every one of us must face when it comes to our relationship with God—Jew and Gentile alike.

Yet understand this: God's faithfulness is not contingent upon ours. His plan will not be foiled because of our unfaithfulness. God remains true to His Word. Rather, it is we who risk forfeiting the blessings that come through faith and obedience when we reject what He has graciously offered.

And therein lies the rub that provokes jealousy, especially when we see someone else enjoying the very blessing that was originally offered to us, but that we turned down by rejecting Christ.

The Jewish people's rejection of Christ became the occasion for the Gospel to spread among the Gentiles, allowing those who were once “not a people” to become the people of God through faith.

Yet, as we will see in the following verses, there is a sobering warning for us Gentiles as well. While unbelieving Jewish branches were broken off, we must not become arrogant or presume upon God's grace.

If God did not spare the natural branches because of unbelief, what makes us think that we, who have been grafted in, will be spared if we abandon our faith?

God is faithful to His promises, but that does not excuse our unbelief. We must be careful not to take pride in our standing, for as Scripture warns, “If you think you are standing strong, be careful not to fall” (1 Corinthians 10:12, NLT). God's faithfulness should inspire our trust and gratitude, not our complacency.