Here the noun "word" can be translated with the verb "spoke." The word "mouth" represents Jeremiah. This can be stated in active form. AT: "so that what Yahweh spoke through Jeremiah might happen" or "so that the word from Yahweh that Jeremiah spoke might happen" (See: [[rc://en/ta/man/translate/figs-synecdoche]] and [[rc://en/ta/man/translate/figs-activepassive]])
# Yahweh motivated the spirit of Cyrus, king of Persia
Motivating the spirit is a synecdoche for making someone want to act. AT: "Yahweh made Cyrus, king of Persia, want to act" (See: [[rc://en/ta/man/translate/figs-synecdoche]])