לָכֵן֙ הִנָּבֵ֣א בֶן־אָדָ֔ם וְאָמַרְתָּ֣ לְג֔וֹג כֹּ֥ה אָמַ֖ר אֲדֹנָ֣י יְהוִ֑ה הֲל֣וֹא ׀ בַּיּ֣וֹם הַה֗וּא בְּשֶׁ֨בֶת עַמִּ֧י יִשְׂרָאֵ֛ל לָבֶ֖טַח תֵּדָֽע׃
Rashi on Ezekiel
you will know Jonathan renders: you will know the retribution of My might, i.e., you will know and recognize Who is their might and their stronghold.