If you have ever tried to produce apples and have seen damage from pests or disease it will be easy to understand the meaning of Good Fruit. The one thing that you will know very quickly is that it is easier to produce Bad Fruit. Assume our heart and soul are the tree that this fruit is produced. How can you protect it so that it produce good fruit? A fruit tree will naturally take up water and nutrients from the soil. However we are different in that we must choose to take up the water and nutrients from God’s word. Good Fruit comes from choosing to live to honor and glorify God rather than satisfy self.
Matthew 12:33
“Either make the tree good and its fruit good, or make the tree bad and its fruit bad, for the tree is known by its fruit. You brood of vipers! How can you speak good, when you are evil? For out of the abundance of the heart the mouth speaks. The good person out of his good treasure brings forth good, and the evil person out of his evil treasure brings forth evil. I tell you, on the day of judgment people will give account for every careless word they speak, for by your words you will be justified, and by your words you will be condemned
Ephesians 4:29
Let no corrupting talk come out of your mouths, but only such as is good for building up, as fits the occasion, that it may give grace to those who hear
Luke 6:45
The good person out of the good treasure of his heart produces good