On the day when the first man was created, as it is said, "In the day when thou wast created they were prepared" (ibid.), the Holy One, blessed be He, said to the ministering angels: Come, let us descend and render loving service to the first man and to his help-mate, for the world rests upon the attribute of the service of loving-kindness. The Holy One, blessed be He, said: More beloved is the service of loving-kindness than the sacrifices and burnt-offerings which Israel will bring in the future upon the altar before Me, as it is said, || "For I desire love, and not sacrifice" (Hos. 6:6).
God Personally Watched Over Adam and Eve in Eden
Pirkei DeRabbi Eliezer 12:11