'Thirty' in the Bible

And these are the names of the sons of Levi in the order of their generations: Gershon and Kohath and Merari: and the years of Levi's life were a hundred and thirty-seven.

And the sons of Kohath: Amram and Izhar and Hebron and Uzziel: and the years of Kohath's life were a hundred and thirty-three.

And Amram took Jochebed, his father's sister, as wife; and she gave birth to Aaron and Moses: and the years of Amram's life were a hundred and thirty-seven.

Now the children of Israel had been living in Egypt for four hundred and thirty years.

And at the end of four hundred and thirty years, to the very day, all the armies of the Lord went out of the land of Egypt.

If the death of a man-servant or of a woman-servant is caused by the ox, the owner is to give their master thirty shekels of silver, and the ox is to be stoned.

Every curtain is to be thirty cubits long and four cubits wide, all of the same measure.

Every curtain was thirty cubits long and four cubits wide, all of the same measure.

The gold used for all the different work done for the holy place, the gold which was given, was twenty-nine talents, and seven hundred and thirty shekels in weight, by the scale of the holy place.