Paul presented this "older woman (teaching) younger woman" model as one of the greatest teaching opportunities mature Christian women can have in the church. They carefully share wisdom out of their years of experience, something even mature men have no capacity to do. Furthermore, these mature women can do what men should not do in a personal setting - to communicate with women regarding very intimate matters. It's obvious Timothy faced this challenge in Ephesus when Paul exhorted him - particularly as a young single man - to "treat…older women as mothers, and younger woman as sisters, with absolute purity" (1 Ti. 5:1-2).