This I don't understand? How can men and women preach Jesus' name and not be the "Body of Christ?"
At the first Jesus was only sent to Israel :
Matthew 15:24 But he answered and said, I am not sent but unto the lost sheep of the house of Israel.
Jesus was, by the new testament, only to redeem Israel:
Hebrews 9:15 And for this cause he is the mediator of the new testament, that by means of death, for the redemption of the transgressions that were under the first testament, they which are called might receive the promise of eternal inheritance.
Jesus was to cleanse Israel to be kings and priests in the kingdom on earth, to reign with Christ:
Revelation 5:10 And hast made us unto our God kings and priests: and we shall reign on the earth.
There was a separation between Jew and Gentile during the earthly ministry of Christ:
Ephesians 2:12 That at that time ye were without Christ, being aliens from the commonwealth of Israel, and strangers from the covenants of promise, having no hope, and without God in the world:
Even after the cross, Peter upheld the separation of Jew and Gentile:
Acts 10:28 And he said unto them, Ye know how that it is an unlawful thing for a man that is a Jew to keep company, or come unto one of another nation; but God hath shewed me that I should not call any man common or unclean.
In the body of Christ, there is no separation between Jew and Gentile:
Ephesians 2:15 Having abolished in his flesh the enmity, even the law of commandments contained in ordinances; for to make in himself of twain one new man, so making peace;
The gospel preached to Israel by Christ and Peter and the disciples is:
Matthew 4:17 From that time Jesus began to preach, and to say, Repent: for the kingdom of heaven is at hand.
The kingdom of heaven is the kingdom on earth promised Israel.
Those who believed this gospel are the kingdom saints.
The conclusion is that there can be two gospels preached. Peter and the eleven preached the gospel of the kingdom in which the kingdom saints would inherit the earth, and the body of Christ the heavenly places, preached by Paul. The gospel preached by Peter and the disciples was only the name of Jesus, Paul preached the cross. Both groups are saved, but we are to believe not just the name of Jesus, but the cross.