'Faithful' in the Bible

that I put my brother Hanani, and Hananiah the governor of the castle, in charge of Jerusalem; for he was a faithful man, and feared God above many.

and found his heart faithful before you, and made a covenant with him to give the land of the Canaanite, the Hittite, the Amorite, and the Perizzite, and the Jebusite, and the Girgashite, to give it to his seed, and have performed your words; for you are righteous.

I made treasurers over the treasuries, Shelemiah the priest, and Zadok the scribe, and of the Levites, Pedaiah: and next to them was Hanan the son of Zaccur, the son of Mattaniah; for they were counted faithful, and their business was to distribute to their brothers.