en_tn_condensed/psa/040/009.md

I have proclaimed good news of your righteousness in the great assembly

"I have told a large assembly of people the good news of your righteousness."

good news of your righteousness

This refers to the good news that God rescues his people. Alternate translation: "good news that because you are righteous, you rescue your people" (See: rc://en/ta/man/translate/figs-ellipsis)

my lips have not kept back from doing this

Here "my lips" represents the writer, emphasizing his speech. Alternate translation: "I have not stopped myself from proclaiming these things" (See: rc://en/ta/man/translate/figs-metonymy)