Final answer:
Jesus spoke Aramaic, a language closely related to Hebrew and common among the Jews in Palestine. The Gospels, though written in Greek, contain several Aramaic words of Jesus.
Step-by-step explanation:
Jesus spoke Aramaic, a language closely related to Hebrew. This was the common language of the Jews in Palestine ever since the Jewish return from Babylonian Captivity in the sixth century BC. Though written in Greek, the Gospels retain several Aramaic words of Jesus—such as when Jesus addresses God as "Abba," as well as Aramaic place names.