מוֹאָ֤ב ׀ סִ֬יר רַחְצִ֗י עַל־אֱ֭דוֹם אַשְׁלִ֣יךְ נַעֲלִ֑י עֲלֵֽי־פְ֝לֶ֗שֶׁת אֶתְרוֹעָֽע׃
Moab mein Waschbecken, auf Edom werfe ich meinen Schuh, über Pleset juble ich.
Rashi on Psalms
Moab is my washbasin i.e., my slaves and my servants, like a utensil that people use.
Rashi on Psalms
on Edom I shall cast my servitude, that their kings should put my shoes on my feet.
Rashi on Psalms
I shall shout I shall raise my voice to them to frighten them.