What language did Jesus speak?

The short answer

Jesus spoke Aramaic in daily life, the common language of Jewish people in Galilee in his time. He likely knew Hebrew from the scriptures too, and may have known some Greek.

What the record says

The Gospels were written in Greek, but in a few places they keep his own Aramaic words. On the cross, Mark records:

At the ninth hour Jesus cried with a loud voice, saying, “Eloi, Eloi, lama sabachthani?” which is, being interpreted, “My God, my God, why have you forsaken me?”

Mark 15:34

Mark also keeps the Aramaic words he spoke to a sick girl:

Taking the child by the hand, he said to her, “Talitha cumi!” which means, being interpreted, “Girl, I tell you, get up!”

Mark 5:41

Hebrew was the language of the scriptures, and Luke shows Jesus reading from the scroll in his hometown synagogue:

He came to Nazareth, where he had been brought up. He entered, as was his custom, into the synagogue on the Sabbath day, and stood up to read.

Luke 4:16

At the cross, John says the sign over his head was written in three languages:

…and it was written in Hebrew, in Latin, and in Greek.

John 19:20

What history adds

Most scholars agree Aramaic was his first language. It had been the shared tongue of the Near East for centuries, and Jews in Galilee and Judea spoke it at home and in the market. The Gospel writers kept a few of his Aramaic words even while writing in Greek, which is one of the strongest clues we have.

Hebrew was still alive in his world. The Dead Sea Scrolls, copied between about 250 BC and the first century AD, are mostly in Hebrew, with some in Aramaic and a few in Greek. That one find shows all three languages in use by Jews in his lifetime.

Greek was the language of trade and of the Roman east. About 6 kilometers (under 4 miles) from Nazareth sat Sepphoris, a city Herod Antipas rebuilt while Jesus was growing up. A craftsman’s family working in a town like that may have picked up some Greek. How much Jesus spoke is still debated.

Josephus, a Jewish writer from the same century, shows the same mix. He wrote his history of the war with Rome first “in the language of our country” and then translated it “into the Greek tongue” for readers across the empire.

How Son of Man tells it

Son of Man is a novel. It imagines the years the Gospels skip. The novel imagines a boy who grew up between languages. He spent his first years in Alexandria in Egypt, a Greek city, and his family owns a Greek copy of the scriptures that Joseph teaches him to read. In chapter three, “The Ridge,” he starts at the synagogue school already ahead of the other boys:

“Yeshua had mastered Aramaic and Greek before he arrived, which gave him a head start on Hebrew.”

Sources

1. Mark 15 (World English Bible)
2. Mark 5 (World English Bible)
3. Luke 4 (World English Bible)
4. John 19 (World English Bible)
5. Language of Jesus (Wikipedia overview with scholarly references)
6. Dead Sea Scrolls (Wikipedia overview)
7. Sepphoris (Wikipedia overview)
8. Josephus, The Wars of the Jews, preface (Project Gutenberg, Whiston translation)