“As for what was sown

On good soil,

This is the one

Who hears the word

And understands it.

He indeed bears fruit.

He yields,

In one case a hundredfold,

In another sixtyfold,

And in another thirtyfold.”

 

ὁ δὲ ἐπὶ τὴν καλὴν γῆν σπαρείς, οὗτός ἐστιν ὁ τὸν λόγον ἀκούων καὶ συνιείς, ὃς δὴ καρποφορεῖ καὶ ποιεῖ ὃ μὲν ἑκατὸν ὃ δὲ ἑξήκοντα ὃ δὲ τριάκοντα.

 

This explanation of the sower parable about the good seeds can be found in all 3 synoptic gospels, Mark, chapter 4:20, and Luke, chapter 8:15, with Matthew closer to Mark.  As for what was sown on good soil (ὁ δὲ ἐπὶ τὴν καλὴν γῆν σπαρείς), these are the people who hear the word of the kingdom and understand it (οὗτός ἐστιν ὁ τὸν λόγον ἀκούων καὶ συνιείς).  They then bear good fruit (ὃς δὴ καρποφορεῖ).  They yield either a hundredfold (καὶ ποιεῖ ὃ μὲν ἑκατὸν), sixtyfold (ὃ δὲ ἑξήκοντα), or thirtyfold (ὃ δὲ τριάκοντα).  Only about 25% of the seeds sown were effective.  Thus, only about 25% of the people hearing the word of the kingdom will follow it.  There had to be good circumstances or pre-depositions to hearing and understanding for the word or the seed to be effective.  The seeds or the word that fell on the path, on the rocky ground, or the thorns were ineffective.  However, even among the effective seeds that were on good soil, the word would have different results.  Some would yield 100 times, some 60, and some 30.  There was no magic formula.  The circumstances among the good hearers would also bring about a variety of responses and effectiveness.