15 But the seed on good soil stands for those with a noble and good heart, who hear the word, retain it, and by persevering produce a crop.

Read Luke 8:15 Using Other Translations

But that on the good ground are they, which in an honest and good heart, having heard the word, keep it, and bring forth fruit with patience.
As for that in the good soil, they are those who, hearing the word, hold it fast in an honest and good heart, and bear fruit with patience.
And the seeds that fell on the good soil represent honest, good-hearted people who hear God’s word, cling to it, and patiently produce a huge harvest.