'First' in the Bible

In the first year of Cyrus king of Persia, the word of the Lord spoken through Jeremiah was fulfilled. The Lord put it into the mind of King Cyrus to issue a proclamation throughout his entire kingdom and to put it in writing:

On the first day of the seventh month they began to offer burnt offerings to the Lord, even though the foundation of the Lord’s temple had not yet been laid.

But many of the older priests, Levites, and family leaders, who had seen the first temple, wept loudly when they saw the foundation of this house, but many others shouted joyfully.

However, in the first year of Cyrus king of Babylon, he issued a decree to rebuild the house of God.

In the first year of King Cyrus, he issued a decree concerning the house of God in Jerusalem: Let the house be rebuilt as a place for offering sacrifices, and let its original foundations be retained. Its height is to be 90 feet and its width 90 feet,

The exiles observed the Passover on the fourteenth day of the first month.

He began the journey from Babylon on the first day of the first month and arrived in Jerusalem on the first day of the fifth month since the gracious hand of his God was on him.

We set out from the Ahava River on the twelfth day of the first month to go to Jerusalem. We were strengthened by our God, and He protected us from the power of the enemy and from ambush along the way.

The exiles did what had been proposed. Ezra the priest selected men who were family leaders, all identified by name, to represent their ancestral houses. They convened on the first day of the tenth month to investigate the matter,

and by the first day of the first month they had dealt with all the men who had married foreign women.