These two clauses mean the same thing. This can be stated in active form. Alternate translation: "People from other nations will know their descendants" (See: [[rc://en/ta/man/translate/figs-parallelism]] and [[rc://en/ta/man/translate/figs-activepassive]])
This clause assumes the same verb as the previous one. Alternate translation: "their offspring will be known among the peoples" (See: [[rc://en/ta/man/translate/figs-ellipsis]])