Римлянам 11:18

Boast not against the--rejected branches. But if thou--"do" boast--remember that thou bearest not--"it is not thou that bearest" the root, but the root thee--"If the branches may not boast over the root that bears them, then may not the Gentile boast over the seed of Abraham; for what is thy standing, O Gentile, in relation to Israel, but that of a branch in relation to the root? From Israel hath come all that thou art and hast in the family of God; for "salvation is of the Jews" (Joh 4:22).

The apostle, having reconciled that great truth of the rejection of the Jews with the promise made unto the fathers, is, in this chapter, further labouring to mollify the harshness of it, and to reconcile it to the divine goodness in general. It might be said, "Hath God then cast away his people?" The apostles therefore sets himself, in this chapter, to make a reply to this objection, and that two ways: - I. He shows at large what the mercy is that is mixed with this wrath (v. 1-32). II. He infers thence the infinite wisdom and sovereignty of God, with the adoration of which he concludes this chapter and subject (Rom 11:33-36).

11:18 You are just a branch, not the root: By the time Paul wrote to the church in Rome, it was composed mainly of Gentiles, a common situation in the early Christian communities. This dominant role led many Gentile Christians to brag about their status, while treating Jews and their religious heritage with disdain. Paul reminds the Gentile believers that they enjoy God’s blessings only because they have been included in the one people of God, who are rooted in God’s promises to Israel.