en_tn_condensed/psa/132/012.md

sit on your throne

Ruling as king is spoken of as sitting on the throne. Alternate translation: "rule as king" (See: rc://en/ta/man/translate/figs-metaphor)

your sons

Here "your sons" represents the descendants of David that would become king. Alternate translation: "your descendants" (See: rc://en/ta/man/translate/figs-synecdoche)