"Millions of people, animals and other beings have come and gone.But the sum total of the Universe - has it become less? It remains unchanged. They have never become less. They are always there." - Nisargadatta Maharaj
Mediumship can be easily explained as someone like me being the phone for someone like you to connect with someone that is not there in that moment. Our eyes can only perceive 3% of the spectrum of the Universe, so they cannot see the different dimensions that collide with us every single day. In this manner, we can access to beings in other dimensions, usually 5th or 7th, depending on the state the Soul that you want to contact is.
I can connect you to passed ones, but not only family, also your passed beloved pets or a Master that you would be specially interested. Believe it or not, I have had the chance to connect to Masters such as Bruce Lee or Einstein, depending on the advice I was looking for. It can get very intense! But it is always with much Respect.