יְהוָ֣ה מָ֭לָךְ תָּגֵ֣ל הָאָ֑רֶץ יִ֝שְׂמְח֗וּ אִיִּ֥ים רַבִּֽים׃
The LORD reigneth; let the earth rejoice; Let the multitude of isles be glad.
Rashi on Psalms
The Lord has reigned when He takes the kingdom from Amalek and from his descendants.
Rashi on Psalms
the earth will exult This is what Ezekiel said (35:14): “When the whole earth rejoices, I shall make you desolate.” He prophesied this concerning Amalek.