Commentaries:
"Bear[ing] fruits worthy of repentance" implies a process. Just as a tree does not produce fruit overnight, a Christian does not fully repent overnight. It is a lifelong process of making changes, and over time we will produce the fruit of the Spirit more consistently than the works of the flesh.
Martin G. Collins
Basic Doctrines: Repentance
Once regenerated by the Holy Spirit from the Father, we must continually be led by it, bearing spiritual fruit throughout our lives. If we are producing the fruit of the Spirit, which exhibit a sound mind, we know it is working in us. The Spirit is the mind and essence of the divine nature, and through it God carries out His will. It empowers the mind to comprehend spiritual matters, producing conversion. It gives us the strength, will and faith to overcome our sins.
Martin G. Collins
The Holy Spirit
Other Forerunner Commentary entries containing Galatians 5:25:
Ecclesiastes 12:13-14
John 6:29