Nehemiah 10:29-30

10:29 hereby participate with their colleagues the town leaders and enter into a curse and an oath to adhere to the law of God which was given through Moses the servant of God, and to obey carefully all the commandments of the LORD our Lord, along with his ordinances and his statutes.

10:30 “We will not give our daughters in marriage to the neighboring peoples, and we will not take their daughters in marriage for our sons.

Deuteronomy 6:13

6:13 You must revere the Lord your God, serve him, and take oaths using only his name.

Deuteronomy 6:2

6:2 and that you may so revere the Lord your God that you will keep all his statutes and commandments that I am giving you – you, your children, and your grandchildren – all your lives, to prolong your days.

Deuteronomy 15:12-15

Release of Debt Slaves

15:12 If your fellow Hebrew – whether male or female – is sold to you and serves you for six years, then in the seventh year you must let that servant go free. 15:13 If you set them free, you must not send them away empty-handed. 15:14 You must supply them generously from your flock, your threshing floor, and your winepress – as the Lord your God has blessed you, you must give to them. 15:15 Remember that you were a slave in the land of Egypt and the Lord your God redeemed you; therefore, I am commanding you to do this thing today.

Ezra 10:5

10:5 So Ezra got up and made the leading priests and Levites and all Israel take an oath to carry out this plan. And they all took a solemn oath.