King James Version (KJV)
The anger of the LORD shall not return, until he have executed, and till he have performed the thoughts of his heart: in the latter days ye shall consider it perfectly.
Modern English
Yahweh’s anger will not return until he has executed, and until he has performed the intents of his heart. In the latter days, you will understand it perfectly.
Hebrew
לֹ֤א יָשׁוּב֙ אַף־יְהוָ֔ה עַד־עֲשֹׂת֥וֹ וְעַד־הֲקִימ֖וֹ מְזִמּ֣וֹת לִבּ֑וֹ בְּאַֽחֲרִית֙ הַיָּמִ֔ים תִּתְבּ֥וֹנְנוּ בָ֖הּ בִּינָֽה׃
loʾ yashvb ʾaf-yhvah ʿad-ʿashotvo vʿad-haqiymvo mzimvot libvo bʾaḥariyt hayamiym titbvonnv bah biynah