Deuteronomy 26:17-18

17Today, you have said clearly that the Lord is your God. You have agreed to live in a way that pleases him. You have agreed that you will obey his rules, his commands and his laws. You will do everything that he has told you to do.

18Today the Lord has accepted you to be his own special people. He already promised that he would do that. As his people, you must obey all his commands.