This speaks of three people together being stronger as if they were a three-strand rope. AT: "three people are even stronger, like a three-strand rope that" (See: [[rc://en/ta/man/translate/figs-metaphor]])
This can be stated in active form. AT: "people cannot easily break a rope made with three strands" (See: [[rc://en/ta/man/translate/figs-activepassive]])