Have you ever got an apple and cut it open and it was rotten inside. How about a potato? There is nothing more disgusting to choose a fruit or vegetable that looks wonderful on the outside but mushy on the inside. Most of the time it is caused by worms or other types of insects that have penetrated the outside and worked its way to the core. Have you ever seen this in people? They portray looking good on the outside but their core is really messed up and need some cleaning. How many times in our own lives do we take the time to clean out what may be lurking on the inside causing damage. It is not until we realize the damage it has caused us before taking action to kill the thing. The enemy is very subtle when he penetrates our mind. One little thing can mess up attitudes, emotions and your relationship with God if it continues to live. That is why we must captivate every thought to God to stay healthy. We must continue to live a lifestyle of holiness and peace. A healthy tree will produce good fruit. Your fruit is your actions. Your actions can be tasteful and sweet or they can be smelly and rotten. The character which manifest in difficult or hard times usually displays the inside of your fruit.
Fruit (Karpos) is used in its literal sense to refer to fruit, produce or offspring, which describes that which is produced by the inherent energy of a living organism. Karpos is what something naturally produces. Figuratively, karpos is used of the consequence of physical, mental, or spiritual action. In the NT the figurative (metaphorical) uses predominate and this is particularly true in the Gospels, where human actions and words are viewed as fruit growing out of a person’s essential being or character. Karpos refers to that which originates or comes from something producing an effect or result (benefit, advantage, profit, utility).
A tree may produce good fruit because it is healthy however the insects that may penetrate is which causes damage. Sometimes we all need a spraying and covering of the Holy Spirit which will keep the little varmints out.
Matthew 7:17 By their fruits you will know them. Do people pick grapes from thornbushes, or figs from thistles? Just so, every good tree bears good fruit, and a rotten tree bears bad fruit. A good tree cannot bear bad fruit, nor can a rotten tree bear good fruit. Every tree that does not bear good fruit will be cut down and thrown into the fire.