What is the Celtic symbol for forever?

The Celtic symbol often associated with the concept of "forever" is the Celtic knot, particularly the endless knot or the trinity knot. These designs feature interwoven lines without a clear beginning or end, symbolizing eternity, interconnectedness, and the cyclical nature of life. The trinity knot, specifically, represents the interconnectedness of life, love, and faith, making it a powerful emblem of eternal bonds.