The words "this far" mean only as far as the boundary that Yahweh set up. Alternate translation: "You may come as far as this boundary, but no farther" (See: [[rc://en/ta/man/jit/figs-explicit]])
"to the power of your waves." The waves are spoken of as if they could have pride. The abstract noun "pride" can be translated as the adjective "proud." Alternate translation: "to your proud waves" or "to your powerful waves" (See: [[rc://en/ta/man/jit/figs-personification]] and [[rc://en/ta/man/jit/figs-abstractnouns]])