en_tn_condensed/psa/047/009.md

The princes of the peoples

"The rulers of all the nations"

gathered together to the people

Possible meanings are that the rulers of the nations 1) "gather in front of the people" or 2) "gathered together with the people" so that all may worship God as king.

the shields of the earth belong to God

"the kings of the earth are subject to God"