This can be stated in positive form. Alternate translation: "We will kill whoever has stolen your gods" (See: [[rc://en/ta/man/translate/figs-litotes]])
The word "our" refers to Jacob's relatives and includes Laban's relatives. All the relatives will watch to make sure everything is fair and honest. (See: [[rc://en/ta/man/translate/figs-inclusive]])
# identify whatever with me is yours and take it
"look for whatever we have that is yours and take it"