It was not so strange that Laban should give, as that Jacob should take, not only two wives, but two sisters to wife, which seems to be against the law of nature, and was expressly forbidden by God afterward, Leviticus 18:18; though it be also true that God might dispense with his own institution, or permit such things in the patriarchs upon special reasons, which are not to be drawn into example.
Related Commentaries of Genesis 29:28
Genesis 29:28
28 And Jacob did so, and fulfilled her week: and he gave him Rachel his daughter to wife also.