Barabbas Son of a Father

A fictional account of Barabbas, a lesser known Biblical character. All that is known about him is that he was an insurrectionist condemned by the Romans to die, until his path intersected with that of Jesus Christ. Barabbas was set free as Jesus was crucified in his place. Why, of all the persons born into the world, was his life the one to intersect with the life of Jesus on such a day, in such a given way?