'Thirty' in the Bible

He had thirty sons who rode on thirty donkey colts, and they had thirty cities, which are called Havvoth Jair to this day, which are in the land of Gilead.

He had thirty sons; and thirty daughters he sent abroad, and thirty daughters he brought in from abroad for his sons. He judged Israel seven years.

He had forty sons and thirty sons' sons, who rode on seventy donkey colts: and he judged Israel eight years.

It happened, when they saw him, that they brought thirty companions to be with him.

Samson said to them, "Let me tell you a riddle now. If you can declare it to me within the seven days of the feast, and find it out, then I will give you thirty linen garments and thirty changes of clothing;

but if you can't declare it to me, then you shall give me thirty linen garments and thirty changes of clothing." They said to him, "Put forth your riddle, that we may hear it."

The Spirit of Yahweh came mightily on him, and he went down to Ashkelon, and struck thirty men of them, and took their spoil, and gave the changes [of clothing] to those who declared the riddle. His anger was kindled, and he went up to his father's house.

The children of Benjamin went out against the people, and were drawn away from the city; and they began to strike and kill of the people, as at other times, in the highways, of which one goes up to Bethel, and the other to Gibeah, in the field, about thirty men of Israel.

The men of Israel turned in the battle, and Benjamin began to strike and kill of the men of Israel about thirty persons; for they said, "Surely they are struck down before us, as in the first battle."