Abbey Press 6.13" x 9.25" trinity Knot wall cross. Part of our trinity treasures collection. A lovely addition to any home, and a wonderful gift, the resin wall cross features copper-colored painted detail. Ready to hang. From Abbey Press. 6 1/8" x 9 1/4". gift card message: the trinity Knot the Celtic trinity Knot (or triquetra, meaning "three-cornered") is a Christian symbol for the trinity: God the father, son and Holy spirit. The interwoven circle symbolizes the "whole" created through the unity of the three persons, a sign of unending life and love.