The genealogy in 1 Chr 5,1b-2 refers to the saying on Reuben in Gen 49,3-4 and its literary context, Genesis 48–49. In this way it defines the relationship between the three sons of Jacob (i.e. the tribes) Reuben, Joseph, and Judah. While Reuben’s status as firstborn is described with the use of a mere chronological 'before', he himself is characterized by the significant loss of his prerogatives. This description of Reuben sets the tone for what is said about the Eastern tribes (1 Chr 5,3-26), in the history of which an ephemeral conquest made by Reuben (only) in the East (cf. 1 Chr 5,10.18- 22) precedes a (permanent) exile of these tribes (cf. 1 Chr 5,6.25-26).