Genesis 29:26

And Laban said, It must not be so done in our country, to give the younger-afore the first-born. Granted that this was an established custom in the place, or district, where Laban was living, his excuse was still a flimsy pretext, for his business would have been to acquaint Jacob with that custom at the time the contract was made His selfish motives, especially his avarice, here came to the surface, even as it was in evidence more and more in the succeeding years.