Look at this way, at every stage of soul journey which eventually translates into different lives and experiences , a soul experiences and creates those experiences of trust and love in different forms. May be it choses a physical relationship of different roles like mother or father who is also a daughter and son who is also a sibling and friend who is also a worker and who is also ones own best friend and also inherently a Soul on its own journey kayaking with others it chooses along . All of these dynamics lead to realisation of these virtues at the Core.
Brahmaville 