Yes we do. We know that the dispensation of the law changed into the dispensation of grace dont we. The dispensation of the law dealt exclusively with Israel while the dispensation of grace deals with all people on earth. When the fullness of the Gentiles comes in the dispensation of grace will end and there will again be a dispensation that deals specifically with Israel.
“and there will be a dispensation that deals specifically with Israel”
care to provide Scripture to back this up?
These attempts to interject unsubstantiated dispensation theories into the Christian message serves only to diminish the work of Christ,and rivals any known historical heresy.
Don't forget most Jews today are cultural agnostic types while Israel is a state founded by atheistic socialists who had no interest in God.The Jew of the bible and the one of today are distinct entities.