הָקֵ֣ם לְ֭עַבְדְּךָ אִמְרָתֶ֑ךָ אֲ֝שֶׁ֗ר לְיִרְאָתֶֽךָ׃
Confirm Thy word unto Thy servant, which pertaineth unto the fear of Thee.
Rashi on Psalms
that is for Your fear That I and my children shall fear Your name, for on that condition You promised me (I Kings 2:4): “if your children take heed in their way, etc.”