'Certain' in the Bible

That Hanani, one of my brethren, came, he and certain men of Judah; and I asked them concerning the Jews that had escaped, which were left of the captivity, and concerning Jerusalem.

And it came to pass, when I heard these words, that I sat down and wept, and mourned certain days, and fasted, and prayed before the God of heaven,

because certain of them kept claiming, "Since we have so many sons and daughters, we must get some grain so we can eat and survive."

All these were the people who went up from Tel-melah, Tel-harsha, Cherub, Addon, and Immer; but because they had no knowledge of their fathers' families or offspring, it was not certain if they were Israelites:

And at Jerusalem dwelt certain of the children of Judah, and of the children of Benjamin. Of the children of Judah; Athaiah the son of Uzziah, the son of Zechariah, the son of Amariah, the son of Shephatiah, the son of Mahalaleel, of the children of Perez;

For it was the king's commandment concerning them, that a certain portion should be for the singers, due for every day.

And of the Levites, certain courses in Judah were joined to Benjamin.

And certain of the priests' sons with trumpets; namely, Zechariah the son of Jonathan, the son of Shemaiah, the son of Mattaniah, the son of Michaiah, the son of Zaccur, the son of Asaph:

And certain are appointed on that day over the chambers for treasures, for heave-offerings, for first-fruits, and for tithes, to gather into them out of the fields of the cities the portions of the law for priests, and for Levites, for the joy of Judah is over the priests, and over the Levites, who are standing up.

But in all this time was not I at Jerusalem: for in the two and thirtieth year of Artaxerxes king of Babylon came I unto the king, and after certain days obtained I leave of the king:

I gave instructions that Shelemiah the priest, Zadok the scribe, and a certain Levite named Pedaiah be put in charge of the storerooms, and that Hanan son of Zaccur, the son of Mattaniah, be their assistant, for they were regarded as trustworthy. It was then their responsibility to oversee the distribution to their colleagues.

And I contended with them, and cursed them, and smote certain of them, and plucked off their hair, and made them swear by God, saying, Ye shall not give your daughters unto their sons, nor take their daughters unto your sons, or for yourselves.