In B’reishis (32:5), Yaakov Avinu instructs his angels to relate to his brother Eisav: “To my lord to Eisav, so said your servant Yaakov: I have sojourned with Lavan [Laban, in English] and have lingered until now.” Rashi notes the Hebrew word “garti” for “I have sojourned” has the numerical equivalent of 613, the number of mitzvos contained in the Torah. The message Yaakov is conveying, explains Rashi, is that although I was living with my father-in-law Laban, I kept faithful to the Torah and did not learn from his wicked ways.