'First' in the Bible

And my God put into mine heart to gather together the nobles, and the rulers, and the people, that they might be reckoned by genealogy. And I found a register of the genealogy of them which came up at the first, and found written therein,

And Ezra the priest brought the law before the congregation both of men and women, and all that could hear with understanding, upon the first day of the seventh month.

Also day by day, from the first day unto the last day, he read in the book of the law of God. And they kept the feast seven days; and on the eighth day was a solemn assembly, according unto the manner.

and [we obligate ourselves] to bring the first fruits of our ground and the first fruits of all the fruit of every tree to the house of the Lord annually,

As well as the first of our sons and of our cattle, as it is recorded in the law, and the first lambs of our herds and of our flocks, which are to be taken to the house of our God, to the priests who are servants in the house of our God:

We will bring a loaf from our first batch of dough to the priests at the storerooms of the house of our God. We will also bring the firstfruits of our grain offerings, of every fruit tree, and of the new wine and oil. A tenth of our land’s produce belongs to the Levites, for the Levites are to collect the one-tenth offering in all our agricultural towns.

And Mattaniah, the son of Mica, the son of Zabdi, the son of Asaph, who had to give the first note of the song of praise in prayer, and Bakbukiah, the second among his brothers, and Abda, the son of Shammua, the son of Galal, the son of Jeduthun.

Then I brought up the leaders of Judah to the crest of the wall, and appointed two large thanksgiving choirs, the first of which proceeded on the wall to the right toward the Dung Gate.