He is being held in a jail in the Negev desert. You could say the Jews for Jesus is the Yad L’Achim’s biggest enemy, so what was Yad L’Achim doing in the desert at this time? I’ll refer you to their Facebook group here:-
We hope Barry will be freed as soon as possible, but we see followers of Yeshua get persecuted in Israel just like believers in Islamic, Hindu and Buddhist countries, but the circumstances of this arrest we are sure will bring attention to the Messiah of Israel.
http://roshpinaproject.com/2013/11/21/the-jews-for-jesus-negev-1-british-jews-for-jesus-campaigner-arrested-in-israel/ – http://www.israeltoday.co.il/NewsItem/tabid/178/nid/24262/Default.aspx?hp=article_title – http://www.jewsforjesus.org/about-jews-for-jesus/press/jews-for-jesus-campaigner-taken-to-prison-in-israel-without-cause
Matthew 5 : 9 Blessed are the peacemakers, for they will be called children of God. 10 Blessed are those who are persecuted because of righteousness, for theirs is the kingdom of heaven. 11 “Blessed are you when people insult you, persecute you and falsely say all kinds of evil against you because of me.