'Thirty fold' in the Bible

Part fell in good ground, and brought forth good fruit: some a hundredfold, some sixtyfold, some thirtyfold.

He which is sown in the good ground, is he, that heareth the word and understandeth it, which also beareth fruit, and bringeth forth, some a hundredfold, some sixtyfold, and some thirtyfold."

And some fell upon good ground: and did yield fruit that sprang and grew: and brought forth some thirty fold, some sixty fold, and some a hundred fold."

And those that were sown in good ground, are they that hear the word and receive it, and bring forth fruit, some thirty fold some sixty fold, some a hundred fold."