In Biblical times, “Bar” was used to mean “Son of”. Jesus was Yeshua Bar-Joseph. (Jesus, son of Joseph.)
Who was the prisoner released for the Passover Barabbas. Son of Abbas.
Now we have the PLO PM Abbas. Hmmmmm.........
Or “Abba”...son of the Father.
In his “Revolution In Judaea”, Hyam Maccoby makes a compelling argument that Jesus and Barabbas are one and the same individual.