The sacrifice which Samuel planned was meant to be accompanied by a fellowship meal (see 1 Samuel 9:19–24). This suggests that it was going to be a thanksgiving/fellowship offering (Leviticus 3:1–17; Leviticus 7:11–21).1 Samuel, Jesse, and his sons will leave together for the feast only after the youngest has also joined them.2
11 Puis Samuel dit à Isaï: Sont-ce là tous tes fils? Et il répondit: Il reste encore le plus jeune, mais il fait paître les brebis. Alors Samuel dit à Isaï: Envoie-le chercher, car nous ne nous placerons pas avant qu'il ne soit venu ici.