The phrases "What is my offense" and "What is my sin" mean basically the same thing. Jacob is asking Laban to tell him what he did wrong. AT: "What have I done wrong that you should pursue me like this?" (See: [[rc://en/ta/man/translate/figs-parallelism]])
Here the word "our" refers to Jacob's relatives and includes Laban's relatives. AT: "Lay anything you have found in front of our relatives" (See: [[rc://en/ta/man/translate/figs-inclusive]])
Here "two of us" refers to Jacob and Laban. The phrase "to judge between" means to decide which person is right in a dispute. AT: "they may judge between the two of us" (See: [[rc://en/ta/man/translate/figs-inclusive]])