Christians believe the Holy Spirit comes alongside to teach and guide. They believe the Holy Spirit works in their lives changing them from the inside-out to become more and more like Jesus; to be more peaceful, patient and kind. As the Holy Spirit helps Christians learn and grow to become more and more like Jesus, people begin to see them being more loving, joyful, peaceful, patient and kind just like Jesus.
The Bible calls love, joy, peace, patience, kindness, goodness, faithfulness, gentleness and self-control the Fruit of the Spirit. The Fruit of the Spirit is what ‘grows’ in the life of a Christian when the Holy Spirit is at work.
You may need to explain that these things don’t grow in the same way leaves and branches grow on trees, but, as the Holy Spirit works – changing and guiding a Christian, he or she becomes more loving, more peaceful, more patient etc.
Christians believe that the Fruit of the Spirit is not a list of things they should simply try harder to be good at. Instead they believe that, as they invite the Holy Spirit to work in their lives, his fruit grows and grows and grows and people see them being more loving, more joyful, more peaceful and more patient.