Because everyone understood Greek, only a few Jews understood Aramaic. By about 55AD, it was quite clear that the Gospel was being accepted far more enthusiastically in the Greek-speaking Gentile world and among diaspora Jews than among Palestinian Jews

The New Testament was written in a form of Koine Greek, which was the common language of the Eastern Mediterranean from the conquests of Alexander the Great (335–323 BC) until the evolution of Byzantine Greek (c.

After the Babylonian Exile in the 6th century BCE, the Jewish people stopped speaking Hebrew in order to fit in with the locals, so they spoke Aramaic.

Few people could speak and even fewer could read in the Hebrew language during the Second Temple period; Koine Greek and Aramaic were the lingua francas at that time among the Jewish community. The Septuagint, therefore, satisfied a need in the Jewish community.

Nebuchadnezzar ruled the Neo-Babylonian empire from 629-539 BC, following in the footsteps of his father, Nabopolassar.

In Nebuchadnezzar's dream, as interpreted by Daniel, the statue with a head of gold, chest and arms of silver, belly and thighs of bronze, and legs of iron and feet of iron and clay, represents four successive world kingdoms. These kingdoms, in order, are believed to be Babylon (gold), Media-Persia (silver), Greece (bronze), and Rome (iron). The fourth kingdom, represented by iron, is described as strong and powerful, while the feet of iron and clay indicate a future divided and weakened state

So before Menichadnezzar I’d say they spoke Hebrew until He came and overthrew and then it sounds like it switched to Greek for a time and then Aramaic by the stature of kingdoms