Is the triquetra a protection symbol?

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Tags

1. #loops
2. #through
3. #interconnected
4. #whole
5. #unity
6. #symbol
7. #persons
8. #christian
9. #triquetra
10. #similarity
11. #representation
12. #combination
13. #common
14. #circle
15. #suggested
16. #three
17. #emphasises