'First' in the Bible

Then my God put into my heart to assemble the nobles, the prefects, and the people to be enrolled. I found the book of the genealogy of those who first came back, and I found [this] written upon it:

So Ezra the priest brought the law before the assembly for [each] man and woman to hear with understanding, on the first day of the seventh month.

And he read from the scroll of the law of God day by day from the first day up to the last day. They celebrated the festival for seven days, and on the eighth day there was an assembly according to the rule.