Cleave unto your Wife

"The sum of the whole is, that among the offices pertaining to human society, this is the principal, and as it were the most sacred, that a man should cleave unto his wife. And he amplifies this by a superadded comparison, that the husband ought to prefer his wife to his father. But the father is said to be left not because marriage severs sons from their fathers, or dispenses with other ties of nature, for in this way God would be acting contrary to himself. While, however, the piety of the son towards his father is to be most assiduously cultivated, and ought in itself to be deemed inviolable and sacred, yet Moses so speaks of marriage as to show that it is less lawful to desert a wife than parents. Therefore, they who, for slight causes, rashly allow of divorces, violate, in one single particular, all the laws of nature, and reduce them to nothing. If we should make it a point of conscience not to separate a father from his son, it is a still greater wickedness to dissolve the bond which God has preferred to all others." 

John Calvin, Commentary upon the Book of Genesis.