'Thirty' in the Bible

But a portion falls upon good ground, and gives a return, some a hundred for one, some sixty, some thirty.

But he who has received the seed on good ground is he who hears and understands. Such hearers give a return, and yield one a hundred for one, another sixty, another thirty.")

and said, "What are you willing to give me if I betray him to you?" So they weighed out to him thirty shekels,

Then when Judas, who had betrayed Him, saw that He was condemned, smitten with remorse he brought back the thirty shekels to the High Priests and Elders

Then were fulfilled the words spoken by the Prophet Jeremiah, "And I took the thirty shekels, the price of the prized one on whom Israelites had set a price,