In Judea (kata tēn Ioudaian). Throughout Judea (probably all Palestine), distributive use of kata. The news from Casearea spread like wildfire among the Jewish Christians. The case of the Samaritans was different, for they were half Jews, though disliked. But here were real Romans even if with Jewish affinities.
Had received (edexanto). First aorist middle indicative. The English idiom requires “had” received, the Greek has simply “received.”