We tend to think that what we have is the result of our own efforts. But no one is born of his or her own volition, no one grows by grafting bones to bones by himself or herself, and no one attracts all of his or her environment by his or her own efforts.
All of one's gifts, possessions, and environment are given by God. But man denies God, resists His Word, and refuses to believe. When we offer God our firstfruits, praise and thanksgiving, "so be it," leads to verse 10.