Before they adopted Christianity the Celts believed that, to obtain complete spiritual fulfillment, they had to experience continuous re-birth. Inspired by this belief, their art expression was the designing of infinity knots. Sometimes the knots are symmetrical, sometimes not, but they are always pleasing to the eye.

The Trinity Knot is an ancient Celtic symbol believed to predate the crucifix by hundreds of years. The Trinity Knot takes its shape from three interlocking circles. Before Christianity, it is thought that the concept of three represented the air, water and earth. When Christianity was introduced to Celtic lands the Trinity became the symbol of The Father, The Son and The Holy Spirit.