Here "our" refers to Isaiah and the people of Israel. (See: [[rc://en/ta/man/translate/figs-inclusive]])
## before you ##
Here "you" refers to Yahweh. (See: [[rc://en/ta/man/translate/figs-you]])
## our sins testify against us ##
Isaiah describes the sins as a person who goes before God to declare that the people are guilty. (See: [[rc://en/ta/man/translate/figs-personification]])