'Thirty' in the Bible

and others fell upon the good ground, and yielded fruit, some a hundredfold, some sixty, some thirty.

And he that was sown upon the good ground, this is he that heareth the word, and understandeth it; who verily beareth fruit, and bringeth forth, some a hundredfold, some sixty, some thirty.

and said, What are ye willing to give me, and I will deliver him unto you? And they weighed unto him thirty pieces of silver.

Then Judas, who betrayed him, when he saw that he was condemned, repented himself, and brought back the thirty pieces of silver to the chief priests and elders,

Then was fulfilled that which was spoken through Jeremiah the prophet, saying, And they took the thirty pieces of silver, the price of him that was priced, whom certain of the children of Israel did price;

And Jesus himself, when he began to teach , was about thirty years of age, being the son (as was supposed) of Joseph, the'son of Heli,

And a certain man was there, who had been thirty and eight years in his infirmity.

When therefore they had rowed about five and twenty or thirty furlongs, they behold Jesus walking on the sea, and drawing nigh unto the boat: and they were afraid.

Now this I say: A covenant confirmed beforehand by God, the law, which came four hundred and thirty years after, doth not disannul, so as to make the promise of none effect.