Verses with the word thirtyfold in the New Testament (2 verses):

Matthew 13:8
But other fell into good ground, and brought forth fruit, some an hundredfold, some sixtyfold, some thirtyfold.

Mark 4:20
And these are they which are sown on good ground; such as hear the word, and receive it, and bring forth fruit, some thirtyfold, some sixty, and some an hundred.