'Thirty' in the Bible

And I said to them, "If {it seems right to you}, give [me] my wages, but if not, {keep them}." And they weighed out my wages, thirty silver [shekels].

And Yahweh said to me, "Throw it to the potter," {this noble price} [at] which I was valued by them!" So I took the thirty silver [shekels] and I threw them to the potter [in] the house of Yahweh.