Welcome to Torah for Gentiles
The simplicity of the Noahide Covenant is striking. It requires no religious ceremonies, no sacrificial service, no priestly hierarchy. It upholds equality between men and women, all races and all colours. It is the most basic code of human behaviour that allows for a world united under the One and Only King of the Universe.
According to Torah, it is forbidden for non-Jews to create man-made religions. Why add to the simple perfection of HaShem's covenant? The world of the spirit is as wide to the righteous Noahide as it is to the righteous Jew. One must bear in mind that the very foundation of any relationship with the True God is knowing and fulfilling all the precepts that He has commanded us as Jews and Noahides. Piety cannot replace, and indeed cannot be reached, without this solid foundation.