the church is the body of Christ (Eph.1:23) There was no question as to what the body of Christ is. that a new body was being formed, that was neither Jew nor Gentile (Eph.3:5-6) How can you say this, when Eph 3:6 SPECIFICALLY mentions Gentiles? Paul's point was that salvation was NOT limited to the Jews... that simple. Here, Gentiles was being used in the generic sense to mean 'Non-Jew'. No, in Gal.3:28 it is said that when one believes now he is neither Jew nor Gentile in the eyes of God, but a member of the Body of Christ.
Once this body is complete (the final New Testament saint saved)... No biblical reference given for the very point I was referring to. Does the bible refer to the completeness of the body or not?
Yes, the verse that refers to the completion of the Body leading to the Jewish age beginning again is in Rom.11:25, where Israel is said to be blind the fullness of the Gentiles come in
Then Paul goes on to explain that the next event will be the Second coming and the establishment of the New Convenant promised to Israel (Jer.31:31, Heb.8:80)
Below is from the Scofield Bible, the classical work on Dispensational theology.
11:25 For I would not, brethren, that ye should be ignorant of this mystery, lest ye should be wise in your own conceits; that blindness in part is happened to Israel, until the fulness of the Gentiles be come in.
fullness The "fullness of the Gentiles" is the completion of the purpose of God in this age, viz. the outcalling from among the Gentiles of a people for Christ's name, "the church which is His body" Ephesians 1:22,23 Cf ; Acts 15:14; Ephesians 4:11-13; 1 Corinthians 12:12,13. It must be distinguished from "the times of the Gentiles" Luke 21:24.