Let us define natural as "can be observed in nature", supernatural as "cannot be observed in nature".
Virtually everyone today believes that all life had to have arisen from nonliving matter. A point of disagreement is whether life arose naturally through abiogenesis or supernaturally through some creation narrative.
Life has never been observed in nature to arise from nonliving matter. Therefore, does this imply (using the above definitions) that the life is of supernatural origin?