A lot vs. Alot: 9 Grammatical Pitfalls
= Judas. Among the apostles there were two who bore this name, (1) Judas (Jude 1:1; Matt. 13:55; John 14:22; Acts 1:13), called also Lebbaeus or Thaddaeus (Matt. 10:3; Mark 3:18); and (2) Judas Iscariot (Matt. 10:4; Mark 3:19). He who is called "the brother of James" (Luke 6:16), may be the same with the Judas surnamed Lebbaeus. The only thing recorded regarding him is in John 14:22.
one of the original Twelve Apostles. He is distinguished in John 14:22 as "not Iscariot" to avoid identification with the betrayer of Jesus, Judas Iscariot. Listed in Luke 6:16 and Acts 1:13 as "Judas of James," some Biblical versions (e.g., Revised Standard and New English) interpret this designation to mean "son of James" (i.e., probably the Apostle St. James, son of Alphaeus), while others (e.g., Authorized and Douay) call him "brother of James." Judas is more probably identified with Thaddaeus (Lebbaeus) in Mark 3:18 and Matt. 10:3 and less probably with Jesus' "brother" Judas (Mark 6:3, Matt. 13:55), reputed author of the canonical Letter of Jude that warns against the licentious and blasphemous heretics.