King James Version (KJV)
Moreover I will establish his kingdom for ever, if he be constant to do my commandments and my judgments, as at this day.
Modern English
I will establish his kingdom forever if he continues strong in keeping my commandments and my rules, as he is today.
Hebrew
וַהֲכִינוֹתִ֣י אֶת מַלְכוּת֡וֹ עַד לְ֠עוֹלָם אִם יֶחֱזַ֛ק לַעֲשׂ֥וֹת מִצְוֹתַ֖י וּמִשְׁפָּטַ֑י כַּיּ֖וֹם הַזֶּֽה׃
vahakiynvotiy ʾet malkvtvo ʿad lʿvolam ʾim yeḥezaq laʿasvot miṣvotay vmishpaṭay kayvom hazeh