"the seed that fell on the good soil represents the people" or "in the parable the seed that fell on the good soil represents the people" (See: [[rc://en/ta/man/jit/figs-metonymy]])
Here "heart" is a metonym for a person's thoughts or intentions. Alternate translation: "with an honest and good desire" (See: [[rc://en/ta/man/jit/figs-metonymy]])
"produce fruit by enduring patiently" or "produce fruit by continued effort." Fruit is a metaphor for good works. Alternate translation: "like healthy plants that produce good fruit, they produce good works by persevering" (See: [[rc://en/ta/man/jit/figs-metaphor]])