'Law of God' in the Bible

Ezra read in the book of the law of God day by day, from the first day to the last. They observed the festival for seven days, and on the eighth day they held an assembly as was required.

"Now the rest of the people -- the priests, the Levites, the gatekeepers, the singers, the temple attendants, and all those who have separated themselves from the neighboring peoples because of the law of God, along with their wives, their sons, and their daughters, all of whom are able to understand --

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.