The reason for secrecy is not clear. It will come up again at the end of the narrative when Saul refuses to tell his uncle what Samuel said to him (1 Samuel 10:14–16). Possibly it is to prevent rumours from spreading too soon, rumours that could influence the final selection process and acceptance of Saul’s kingship (see 1 Samuel 10:17 – 11:15).
27 Quand ils furent descendus à l'extrémité de la ville, Samuel dit à Saül: Dis à ton serviteur de passer devant nous. Et le serviteur passa devant. Arrête-toi maintenant, reprit Samuel, et je te ferai entendre la parole de Dieu.