'Thirty' in the Bible

And these are the names of the sons of Levi according to their generations: Gershon, and Kohath, and Merari; and the years of the life of Levi were a hundred thirty and seven years.

And the sons of Kohath: Amram, and Izhar, and Hebron, and Uzziel; and the years of the life of Kohath were a hundred thirty and three years.

And Amram took him Jochebed his father's sister to wife; and she bare him Aaron and Moses: and the years of the life of Amram were a hundred and thirty and seven years.

Now the time that the children of Israel dwelt in Egypt was four hundred and thirty years.

And it came to pass at the end of four hundred and thirty years, even the selfsame day it came to pass, that all the hosts of Jehovah went out from the land of Egypt.

If the ox gore a man-servant or a maid-servant, there shall be given unto their master thirty shekels of silver, and the ox shall be stoned.

The length of each curtain shall be thirty cubits, and the breadth of each curtain four cubits: the eleven curtains shall have one measure.

The length of each curtain was thirty cubits, and four cubits the breadth of each curtain: the eleven curtains had one measure.

All the gold that was used for the work in all the work of the sanctuary, even the gold of the offering, was twenty and nine talents, and seven hundred and thirty shekels, after the shekel of the sanctuary.