True but they won't start murdering though. Although Gentile is used quite a bit in the New Testament, if one narrows things down and the location of the area, the Children of Ishmael(Arabs) had to have been one of the first groups of people to hear the Good News. Before Jesus any Child of Ishmael or Gentile in general had a hard time returning to God because of past events(Noah and Ham, Abraham and Ishmael) which caused centuries long 'family feuds'.
Then Jesus came along and opened the door for anyone regardless of well, just about anything and everything else including foolishness from ancestors. Now any Child of Ishmael along with anyone else who accepts Jesus can easily 'return to the fold' as it were. And unlike our own soap opera families, Jesus' Family will not 'split/divide' in the long run.