Is the Messianic Community the body of Messiah? Is it also "the bride of Christ"?
The Ekklesia is the BODY of Yeshua: "...the afflictions of the Messiah, for the sake of His body, which is the Messianic Community" (Col 1.24).
The Ekklesia is the BRIDE of Yeshua: "Husbands, love your wives, just as Mashiach loved the Messianic Community and gave himself up for her to make her holy, cleansing her by the washing with water through the word, and to present her to himself as a radiant Community, without stain or wrinkle or any other blemish, but holy and blameless" (Eph 5.25-27).
Those Messianics who promulgate the view that the nation of Israel is the exclusive Bride of Mashiach and who equally reject the ekklesia as the Bride need to re-evaluate the biblical revelation and submit to its teachings. For an entire overview of this subject please refer to the BRI/IMCF teachings on the Covenants of God with Israel.