When you're looking back at Galilee in Scripture, you see hints of the tensions that existed--cultural, social, and theological. But really understanding this area where Jesus grew up requires a bit more digging. Here's how Alfred Edersheim describes it:
Impartial history, however, must record a different judgment of the men of Galilee from that pronounced by the Rabbis, and that even wherein they were despised by those leaders in Israel. Some of their peculiarities, indeed, were due to territorial circumstances. The province of Galilee— which the name might be rendered "circuit," being derived from a verb meaning "to move in a circle"— the ancient possession of four tribes: Issachar, Zebulon, Naphtali, and Asher. The name occurs already in the Old Testament (compare Joshua 20:7; 1 Kings 9:11; 2 Kings 15:29; 1 Chronicles 6:76; and especially Isaiah 9:1). In the time of Christ it stretched northwards to the possessions of Tyre on the one side, and to Syria on the other; on the south it was bounded by Samaria— Carmel on the western, and the district of Scythopolis (in the Decapolis) on the eastern side, being here landmarks; while the Jordan and the Lake of Gennesaret formed the general eastern boundary-line. Thus regarded, it would include names to which such reminiscences attach as "the mountains of Gilboa," where "Israel and Saul fell down slain"; little Hermon, Tabor, Carmel, and that great battle-field of Palestine, the plain of Jezreel. Alike the Talmud and Josephus divide it into Upper and Lower Galilee, between which the Rabbis insert the district of Tiberias, as Middle Galilee. We are reminded of the history of Zaccheus (Luke 19:4) by the mark which the Rabbis give to distinguish between Upper and Lower Galilee—former beginning "where sycomores cease to grow." The sycomore, which is a species of fig, must, of course, not be confounded with our sycamore, and was a very delicate evergreen, easily destroyed by cold (Psalms 78:47), and growing only in the Jordan valley, or in Lower Galilee up to the sea-coast. The mention of that tree may also help us to fix the locality where Luke 17:6 was spoken by the Saviour. The Rabbis mention Kefar Hananyah, probably the modern Kefr Anan, to the north-west of Safed, as the first place in Upper Galilee. Safed was truly "a city set on an hill"; and as such may have been in view of the Lord, when He spoke the Sermon on the Mount (Matthew 5:14). In the Talmud it is mentioned by the name of Zephath, and spoken of as one of the signal-stations, whence the proclamation of the new moon, made by the Sanhedrim in Jerusalem (see The Temple), and with it the beginning of every month, was telegraphed by fire-signals from hill to hill throughout the land, and far away east of the Jordan, to those of the dispersion.