They ... entered into a curse, and into an oath ... that we would not give our daughters unto the people of the land, not take their daughters for our sons. 10:29
The Ammonite and the Moabite should not come into the congregation of God for ever.
13:1
Nehemiah rebukes the men for marrying "strange wives." To punish them he "contended with them, and
cursed them, and smote certain of them, and plucked off their hair." 13:25-27