Gen 30:27-30, 27 But Laban said to him, “…I have learned by divination that the LORD has blessed me because of you…29 Jacob said to him, “…30 … you had little before I came, and it has increased abundantly, and the LORD has blessed you wherever I turned. But now when shall I provide for my own household also?
Laban, Jacob’s uncle and father inlaw learned early of Jacob’s character. With his willingness to serve 7 years for Rachel, that benefited Laban, he saw how Jacob was useful to his success (a means to an end). He manipulated circumstances so that Jacob would marry Leah first knowing Jacob’s love for Rachel would force him to serve 7 more years. With Jacob planning an exit, Laban became concerned.
Laban feared separation but not from warmth of affection either for Jacob or his daughters or grandchildren, but from the damage of his estate. From observation, the blessing of heaven rested on Jacob. Laban’s stock increased under Jacob’s management.
Men of the world are often blessed with temporal benefits on account of their relatives, employees, neighbors etc though they may not with wisdom discern, or acknowledge it. It is upon us like Jacob to be aware and diligently and faithfully serve because we are called to be a channel of blessings to those who don’t know or deserve it.