Bind themselves with a curse and an oath to follow the Law of God

Nehemiah 10:1-39
In view of all this, we are making a binding agreement, putting it in writing, and our leaders, out Levites and out priests are affixing(粘貼) their seals to it.
The rest of the people - priest, Levites, gatekeepers, musicians, temple servants and all who separated themselves from the neighboring peoples for the sake of the Law of God, together with their wives and all their sons and daughters who are able to understand.
All these now join their fellow Israelites the nobles, and bind themselves with a curse and an oath to follow the Law of God given through Moses the servant of God and to obey carefully all the commands, regulations and decrees of the Lord our Lord.
We will not neglect the house of out God.
The review of their history in the great confession produces a longing to sign up once again to the covenant-agreement with God, so often broken. Nehemiah the governor, priests, Levites and leaders sign on behalf of the nation. The covenant is ratified(批准) in customary style with a curse and an oath.
Why?
No only read the Bible but also has action to obey the word of the Lord. They make an oath and curse with affixing their seal to the writing.
Not only people but include leaders, Levites and priests, all under such situation everyone have to obey this command.
It is not easy to make such great regulation, they have to separate from this wives, sons and daughters. They were their blood family. People have love in their family.
Whoever wants to be my disciple must deny themselves and take up their cross and follow me. (Matthew 16:24)
How?
Walk on the way of the Lord and Jesus said whoever wants to be my disciple must deny themselves and take up their cross and follow me.