The Trinity Knot is a religious symbol, which has been used for years in both Christian and Pagan heritages. The three arcs believed to represent many things, as many cultures use it and each culture have chosen their own meanings. For example, Christians believe the Trinity Knot represents the Father, Son and Holy Spirit. Others have interpreted it to be a symbol for Earth, Sea and Sky, or Earth, Fire as well as Water. And, some cultures also say it represents eternal love, and is often referred to as the Irish Love Knot. Archaeologists have found the Celtic Knot near lunar and solar symbols on Celtic sites, so the Celts must have believed it to represent something of the lunar and solar phases.