Mysterium tremendum

In the Celtic triple spiral, there is a space where the three spirals connect. It is both a place of meeting and of sheer mystery. Its vast, vibrant emptiness reminds me that, in this life, we will never know all the names of God. Even as the Trinity evokes, it conceals. We will never exhaust the images we use to describe the One who holds us and sends us, who enfolds us and impels us in our eternal turning.

From: http://paintedprayerbook.com/2008/05/12/trinity-sunday-a-spiral-shaped-god/