Try this..."...but as many as received him he gave to them authority children of God to be, to those that believe on name his..." That sir, is the Greek, and there ain't none of your parsing and spinning there. The authority to become children of God was - and is - conditioned on them and our receiving Him!
Certainly the power to become a child of God came from God; however, it is very clear that it is conditioned on receiving him, and it doesn't say one word other than that. End of issue - Period.