Numbers 10:18-20

¹⁸And the order of the camp of Reuben set forward with their host; and over their host was Elizur the son of Shedeur.

¹⁹And over the host of the tribe of the sons of Simeon, was Shelumiel son of Zurishaddai.

²⁰And over the host of the tribe of the children of Gad, was Eliasaph the son of Reuel.