מַה־יּוֹסִ֨יף ע֥וֹד דָּוִ֛יד אֵלֶ֖יךָ לְכָב֣וֹד אֶת־עַבְדֶּ֑ךָ וְאַתָּ֖ה אֶֽת־עַבְדְּךָ֥ יָדָֽעְתָּ׃
װאָס מער נאָך קען דוד דיר זאָגן װעגן דעם כּבֿוד צו דײַן קנעכט? דו קענסט דאָך דײַן קנעכט.
Rashi
What more need David [seek] You The meaning is: What need is there more for David to seek you?
Rashi
to have glory as Your servant in order to do me honor, that I am Your servant, and You know by Yourself. In Samuel (II 7:20) it is written: “And what more can David say to You? For You know Your servant, O Lord.”