Verses with the word ishtob in the Old Testament (2 verses):
2 Samuel 10:6
And when the children of Ammon saw that they stank before David, the children of Ammon sent and hired the Syrians of Bethrehob and the Syrians of Zoba, twenty thousand footmen, and of king Maacah a thousand men, and of Ishtob twelve thousand men.
2 Samuel 10:8
And the children of Ammon came out, and put the battle in array at the entering in of the gate: and the Syrians of Zoba, and of Rehob, and Ishtob, and Maacah, were by themselves in the field.