Nehemiah 10.1. And because of all this we are making a sure covenant and writing it, and on the sealed writing are our princes, our Levites, our priests.

Nehemiah 10:29. And the rest of the people, the priests, the Levites, the gatekeepers, the singers, the Nethinim, and all those who had separated themselves from the peoples of the lands for the Torah (Teaching) of God, their wives, their sons and their daughters, everyone having knowledge and having understanding: 30. they clove to their brothers, their nobles and entered a curse and an oath to walk in God’s Torah (Teaching), which was given by Moses the servant of God, and to observe and do all the commandments of the LORD* our God and His judgments and His statutes. 31. And that we would not give our daughters to the peoples of the land or take their daughters for our sons. 32. And if the peoples of the land bring wares or any food on the Sabbath to sell, that we would not buy it from them on the Sabbath or on the holy day, and that we would leave the seventh year, and the exaction of every debt.