The Gentiles have received The Gospel. It doesn't coincide that Satan is bound and in prison.
There is a difference between the nation of Israel and spiritual Israel. All men everywhere today are called to kneel to Christ alone.
I've never heard any Christian claim otherwise. However, I think you are reaching with the spiritual Israel. If God is done with the Jews and given all the benefits to Christians why has God partially blinded them?
Let me ask, prior to the crucifixion how were people saved and was that salvation limited to any one group?
If God is done with the Jews and given all the benefits to Christians why has God partially blinded them?
God is "done with the Jews" insofar as the writer of Hebrews tells us...
"In that he saith, A new covenant, he hath made the first old. Now that which decayeth and waxeth old is ready to vanish away." -- Hebrews 8:13
God has indeed "given all the benefits to the Christians."
It's sort of startling to read otherwise.
The Jews were partially blinded so that the Gentiles would believe. God no longer saves men by their own blood or race or nationality, but by Christ's blood alone. Jews are called to kneel to Christ just like you and me and Buddhhists and Mormons and atheists and democrats.
Christ tells us exactly what has transpired in the entire chapter of John 8...
And ye shall know the truth, and the truth shall make you free." -- John 8:31-32"Then said Jesus to those Jews which believed on him, If ye continue in my word, then are ye my disciples indeed;
Later, Paul, a Jew, weeps for his brothers who have not been given faith in Christ. He does, however, hope and pray for their eventual conversion.
And since you are agreed that Satan cannot possibly steal you out of God's hand; that the Shepherd will protect every member of His flock, no matter what, then it only seems reasonable to believe that Satan is indeed bound. He still prowls and still beguiles and destroys the reprobate. But he is impotent against those for whom Christ died.
Bound. Not dead. Bound. Restricted.