Nehemiah 13:25
"And I contended with them, and cursed them, and smote certain of them, and plucked off their hair, and made them swear by God, saying, Ye shall not give your daughters unto their sons, nor take their daughters unto your sons, or for yourselves."
Cross References (ranked by relevance)
Neither shalt thou make marriages with them; thy daughter thou shalt not give unto his son, nor his daughter shalt thou take unto thy son.
Then I contended with the nobles of Judah, and said unto them, What evil thing is this that ye do, and profane the sabbath day?
Then arose Ezra, and made the chief priests, the Levites, and all Israel, to swear that they should do according to this word. And they sware.
Also I shook my lap, and said, So God shake out every man from his house, and from his labour, that performeth not this promise, even thus be he shaken out, and emptied. And all the congregation said, Amen, and praised the LORD. And the people did according to this promise.
Then contended I with the rulers, and said, Why is the house of God forsaken? And I gathered them together, and set them in their place.
And thou take of their daughters unto thy sons, and their daughters go a whoring after their gods, and make thy sons go a whoring after their gods.
I gave my back to the smiters, and my cheeks to them that plucked off the hair: I hid not my face from shame and spitting.
They that forsake the law praise the wicked: but such as keep the law contend with them.
And whosoever will not do the law of thy God, and the law of the king, let judgment be executed speedily upon him, whether it be unto death, or to banishment, or to confiscation of goods, or to imprisonment.
In whose eyes a vile person is contemned; but he honoureth them that fear the LORD. He that sweareth to his own hurt, and changeth not.
Thou shalt fear the LORD thy God, and serve him, and shalt swear by his name.