The ground of being is simply what is, at its deepest level: Eckhart’s istigkeit. All that is rests in the ground by its own nature, and that includes us. But we are conscious; more than that, self-aware. In being aware of our own being, becoming truly aware in silence of our own isness as not separate from what is, we realise that the ground of our own self is not other than the ground of all that is.

Cynthia Bourgeault writes, “Mystical hope would simply be what happens when we touch this innermost ground and it floods forth into our being as strength and joy. Hope would be the Mercy – divine love itself – coursing through our being like lightning finding a clear path to the ground.”

She goes on,

You may have noticed that those three experiences Bede Griffiths mentioned as “pathways to the center” have one thing in common: they all catapult us out of ego-centered consciousness. Those who come hack from a near-death experience bring with them a visceral remembrance of how vivid and abundant life is when the sense of separateness has dropped away. Those who fall profoundly in love experience a dying into the other that melts every shred of their own identity, self-definition, caution, and boundaries, until finally there is no “I” anymore-only “you.” Those who meditate go down to the same place, but by a back staircase deep within their own being.

This realisation of our own identity with the ground (it reminds me of the Buddhist concept of Śūnyatā) seems to me to be precisely Bourgeault’s “back staircase.” It is only in the total poverty of silence and stillness that we can find it, but it is our only home.