Nehemiah 10:29-30 Holman Christian Standard Bible (HCSB)
29 join with their noble brothers and commit themselves with a sworn oath[a] to follow the law of God given through God’s servant Moses and to carefully obey all the commands, ordinances, and statutes of Yahweh our Lord.
Details of the Vow
30 We will not give our daughters in marriage to the surrounding peoples and will not take their daughters as wives for our sons.
Nehemiah 13:25 Holman Christian Standard Bible (HCSB)
25 I rebuked them, cursed them, beat some of their men, and pulled out their hair. I forced them to take an oath before God and said: “You must not give your daughters in marriage to their sons or take their daughters as wives for your sons or yourselves!