God has given “the righteousness which is of faith” (Rom. 10:6) to everyone. In fact, “The word is nigh thee,” that is, “the word of faith” (vs. 8). Righteousness by faith has been given to every man. “God hath dealt to every man the measure of faith” (Rom. 12:3). The logical conclusion is that when one fixes his faith in Christ, choosing to believe, God can then dwell within the believer through the power of the Holy Spirit, effecting a change of mind (Phil. 2:5), dispensing the righteousness already prepared in advance for him (being “before ordained,” KJV), into the experience of the believer (Eph. 2:10). This is why, in Romans 10:4, it says that Christ is the fulfillment of the law. Jesus, in the same fallen sinful human flesh that we all have, lived a perfect life, thus fulfilling the law in Himself as a heritage for the human race held in trust for each individual member. When we say “Yes” to Him, He can then fulfill that law in you and me—in our experience. This is not an offer—it is a promise, a gift. Claim that promise. Hold God to His Word. He loves it when you do this.
In the Bible, God is said to do what He does not prevent. For example, in Exodus 7 and 8 where it says that God hardened Pharaoh’s heart it also says Pharaoh hardened his own heart. God did not prevent Pharaoh from hardening his heart, although He could have, but Christ died so that we all might have the power of choice. Pharaoh had the power to choose, and he chose of his own free will to harden his heart. And, later in history, Israel themselves, by their own free will, chose to slumber (Rom. 11:8). We also have the power of choice. Let us not harden our hearts but let us allow God to have control of our thoughts so that we might partake of the divine nature through His promise (Phil. 2:5; 2 Peter 1:4). In the meantime, don’t blame God should the Bible say God does something that looks on the surface to be bad. The Bible is merely using a figure of speech.
Jesus Christ is the Root and the Trunk of the living Vine (the olive tree). We are the branches (John 15:1-5). The original (natural) branches were of the stock of Israel. Corporately, these branches were all cut off (at the stoning of Stephen), and afterwards the Gentiles began to be grafted in. If the fall of Israel resulted in the enriching of the world, and the diminishing of them the enrichment of the Gentiles, just think of what will happen when they accept the truth! (Rom. 11:12). If some of those from Israel (seeing the joy that you have in Christ) should be grafted in with you—that would be as life from the dead (vs. 15). And so Romans 11:20-21 makes sense, “… because of unbelief they were broken off, and thou standest by faith. Be not highminded, but fear: For if God spared not the natural branches, take heed lest he also spare not thee.” None of us have any cause to boast, for we are all nothing without Christ. There is no difference between Jew and Gentile (Rom. 10:12). This is because we all can be grafted together to the same Vine (the good olive tree), standing together through faith in Jesus Christ, and partaking together of the blessings of spiritual Israel.