1 Chronicles 12:4
And Ismaiah the Gibeonite, a mighty man among the thirty, and over the thirty; and Jeremiah, and Jahaziel, and Johanan, and Josabad the Gederathite, And Ismaiah the Gibeonite, a mighty man among the thirty, and over the thirty; and Jeremiah, and Jahaziel, and Johanan, and Josabad the Gederathite,
Ismaiah the Gibeonite is identified as a mighty man among the thirty and as set over the thirty. The verse belongs to the fuller parallel account of the tribes gathering at Hebron to make David king over all Israel. That parallel account records the political changes that brought about his kingship over all Israel. Within it the verse names Ismaiah the Gibeonite among the mighty men who came to support David. The surrounding chapter presents those who came to David as a loyal army to support him, with some described as mighty, skilled, wise, wholehearted, lionlike, or swift.