King James Version (KJV)
If thy children will keep my covenant and my testimony that I shall teach them, their children shall also sit upon thy throne for evermore.
Modern English
If your sons keep my covenant and my testimonies that I shall teach them, their sons also forever shall sit on your throne.
Hebrew
אִם יִשְׁמְר֣וּ בָ֭נֶיךָ בְּרִיתִ֑י וְעֵדֹתִ֖י ז֣וֹ אֲלַמְּדֵֽם גַּם בְּנֵ֣יהֶם עֲדֵי עַ֗ד יֵשְׁב֣וּ לְכִסֵּ֣א לָֽךְ׃
ʾim yishmrv baneyka briytiy vʿedotiy zvo ʾalamdem gam bneyhem ʿadey ʿad yeshbv lkiseʾ lak