The Lord hath made all things for Himself (Prov. xvi. 4), says the Scripture; everything belongs to Him.
Free and intelligent creatures are his as much as those which are otherwise.
It is true that He desires our happiness, but that is neither the chief end of his work, nor an end to be compared with that of his glory. It is for his glory only that He wills our happiness; the latter is a subordinate consideration, which He refers to the final and essential end of his glory. That we may enter into his designs in this respect, we must prefer God before ourselves, and endeavor to will our own happiness for his glory. Men have a great repugnance to this truth, and consider it to be a very hard saying, because they are lovers of self from self-interest.
They understand, in a general and superficial way, that they must love God more than all his creatures, but they have no conception of loving God more than themselves but they shudder when it is explained to them, that God and his glory are to be preferred before ourselves and everything else to such a degree that we must love his glory more than our own happiness and must refer the latter to the former, as a subordinate means to an end.
The Inner Life – Francois Fenelon