The threat Mary Magdalene posed to the men of the early Church was potentially ruinous.

ruinous : 파멸적인, 황폐한

pose a threat to ~:  ~ 에게 위협을 가하다.

The threat Mary Magdalene posed to the men of the early Church was potentially ruinous.

Mary Magdalene 옛날 교회의 사람들에게 가했던 그 위협은 잠재적으로 파멸적이었다.