'Thirty' in the Bible

He had thirty sons who rode on thirty donkeys, and they had thirty towns in the land of Gilead that are called Havvoth-jair (towns of 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 [-in-law] from outside for his sons. He judged Israel for seven years.

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

When the people saw him, they brought thirty companions (wedding attendants) to be with him.

Then Samson said to them, “Let me now ask you a riddle; if you can tell me what it is within the seven days of the feast, and solve it, then I will give you thirty linen tunics (undergarments) and thirty changes of [outer] clothing.

But if you are unable to tell me [the answer], then you shall give me thirty linen tunics (undergarments) and thirty changes of [outer] clothing.” And they said to him, “Ask your riddle, so 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 gear, and gave changes of clothes to those who had explained the riddle. And his anger burned, and he went up to his father’s house.

The Benjamites went out against their army and were lured 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 open country, about thirty men of Israel.

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