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.

And these are they which are sown on good ground; such as hear the word, and receive it, and bring forth fruit, some thirty-fold, some sixty, and some an hundred. A heart soft and tender, stirred to its depths on the great things of eternity, and jealously guarded from worldly engrossments, such only is the "honest and good heart" (Luke 8:15), which "keeps" [ katechousi (G2722)] - that is, "retains" the seed of the word, and bears fruit Just in proportion as it is such a heart. Such "bring forth fruit with patience" (Mark 4:15), or continuance, 'enduring to the end;' in contrast with those in whom the word is "choked" and brings no fruit to perfection. The "thirty-fold" is designed to express the lowest degree of fruitfulness; the "hundred-fold" the highest; and the "sixty-fold" the intermediate degrees of fruitfulness. As 'a hundred-fold,' though not unexampled (Genesis 26:12), is a rare return in the natural husbandry, so the highest degrees of spiritual fruitfulness are too seldom witnessed. The closing words of this introductory parable seem designed to call attention to the fundamental and universal character of it. Mark 4:9 states: "And he said unto them, He that hath ears to hear, let him hear."

In Mark 4:11 it states: "And he said unto them, Unto you it is given to know the mystery of the kingdom of God: but unto them ... " See the notes at Matthew 13:10.