'Thirty' in the Bible

He had thirty sons who rode on thirty donkeys, and they had thirty cities in the land of Gilead that are called Havvoth-jair to this day.

He had thirty sons, and thirty daughters whom he gave in marriage outside the family, and he brought in thirty daughters from outside for his sons. And he judged Israel seven years.

He had forty sons and thirty grandsons who rode on seventy donkeys; and he judged Israel eight years.

When they saw him, they brought thirty companions to be with him.

Then Samson said to them, “Let me now propound a riddle to you; if you will indeed tell it to me within the seven days of the feast, and find it out, then I will give you thirty linen wraps and thirty changes of clothes.

But if you are unable to tell me, then you shall give me thirty linen wraps and thirty changes of clothes.” And they said to him, “Propound your riddle, that we may hear it.”

Then the Spirit of the Lord came upon him mightily, and he went down to Ashkelon and killed thirty of them and took their spoil and gave the changes of clothes to those who told the riddle. And his anger burned, and he went up to his father’s house.

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

Then the men of Israel turned in the battle, and Benjamin began to strike and kill about thirty men of Israel, for they said, “Surely they are defeated before us, as in the first battle.”