The Bible defines the "fruit of the Spirit" in Galatians 5:22-23 as nine essential virtues: love, joy, peace, patience, kindness, goodness, faithfulness, gentleness, and self-control, which grow in a believer's life as a result of the Holy Spirit's presence, reflecting God's character and transforming actions. It's considered one "fruit" with multiple expressions, showing the natural development of Christian character, contrasting with worldly "works of the flesh".

Galatians 5:22-23 But the fruit of the Spirit is love, joy, peace, longsuffering, gentleness, goodness, faith, Meekness, temperance: against such there is no law.