RobH_en_tn/psa/085/002.md

you have covered all their sin

Here sin that is forgiven is spoken of as if it were covered so that it can not be seen. Alternate translation: "you have deliberately forgotten their sin" (See: rc://en/ta/man/translate/figs-metaphor)

their sin

This writer thought of himself as belonging to God's people. Alternate translation: "our sin"