The Trinity Knot is the simplest of the Celtic knots. The Celts were very familiar with the idea of the trinity. Early Christians used the Celts understanding of the trinity to explain the concept of the Holy Trinity (Father, Son, Holy Spirit) and Christians embraced using this knot as a symbol to express that concept. The combination of the trinity knot into rings, linens, jewelry and other bridal designs is associated with eternity and eternal love. The trinity symbol predates the crucifix by hundreds of years.