See my article called “Angel Sparkles: Visions That Confirm Revelations.”

See, I lay in Zion a stone that causes people to stumble and a rock that makes them fall, and the one who believes in him will never be put to shame. –Romans 9:33

So that the cause why Israel is cast off, is not because God sent not His Son and Gospel to them, nor invited them to believe, nor gave them evidence of the truth of Christ, which was sufficient to convince a well-disposed mind; much less, because He hindered them from believing, or because He showed mercy to the Gentiles; but because by error THEY HARDENED THEMSELVES against Christ, as not answering their carnal erroneous expectations. For though God would glorify the riches of His grace by Jesus Christ, yet IT WAS NOT HIS WILL to reveal Him in such visible majesty and glory, as should of itself necessitate and FORCE MEN TO BELIEVE IN HIM: for then faith would have been no work of trial, nor fit for a reward, but such as the wicked and sensual might perform. But God would so reveal His Son, as that faith might have sufficient encouragement and help, and yet such difficulties as might make it proper to honest souls, and fit for a reward; so that those that will be biased by prejudice and worldly interest, will stumble and fall on the Rock which they should be built on; but to THEM THAT SINCERELY TRUST AND OBEY HIM, He might be the author of eternal salvation, and be the power and wisdom of God.
                                                                  –Richard Baxter, Paraphrase on the New Testament