כִּֽי־הִנֵּ֣ה הַ֭מְּלָכִים נֽוֹעֲד֑וּ עָבְר֥וּ יַחְדָּֽו׃
For, lo, the kings assembled themselves, They came onward together.
Rashi on Psalms
the kings have assembled to wage war against it in the wars of Gog and Magog.
כִּֽי־הִנֵּ֣ה הַ֭מְּלָכִים נֽוֹעֲד֑וּ עָבְר֥וּ יַחְדָּֽו׃
For, lo, the kings assembled themselves, They came onward together.