The fullness of the Spirit is not a partial or occasional experience but a continual, overflowing reality in the believer's life. In Luke 3:15-19, we see John the Baptist pointing to Jesus as the One who will baptize with the Holy Spirit and fire, showing that the Spirit’s work is both purifying and empowering. To live in the fullness of the Spirit is to allow His presence to permeate every part of our being, guiding our actions, shaping our character, and equipping us for God’s purposes.