JESUS, Read the Jewish Scriptures, Spoke Hebrew, Wore Jewish clothes , Ate only biblically kosher food, Kept the Jewish Sabbath, Celebrated the Jewish feasts, Followed Jewish customs, Lived His entire life as an observant Jew. Jesus' followers were Jewish. The New Testament tells us that they worshipped on Saturday (the biblically appointed day), attended the Synagogue and kept the feasts. They acknowledged Jesus as the Jewish King and Messiah, wrote the "Jewish" New Testament, and lived Torah-observant lifestyles (Acts 21:20). Jesus and His early followers were deeply rooted in the rich Hebraic soil of their ancestors. They thought, taught, and lived out of this soil. God planted Christianity in this traditionally rich soil.
They were still functioning under the Jewish laws as Jesus had night yet died and paid the sacrificial price once and for all.