Judas son of James

Facts:

Judas son of James was one of Jesus' twelve apostles. Note that he was not the same man as Judas Iscariot.

Often in the Bible, men with the same name were distinguished by mentioning whose son they were. Here, Judas was identified as the "son of James."
Another man named Judas was Jesus' brother. He was also known as "Jude."
The New Testament book called "Jude" was probably written by Jesus' brother Judas, since the author identified himself as the "brother of James." James was another brother of Jesus.
It is also possible that the book of Jude was written by Jesus' disciple, Judas, the son of James.

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