The Spirit motif traces God's life-giving presence and power: the Spirit is present in creation, promised for renewal, given to the Messiah, poured out on the church, and active in sanctification and mission.
The Spirit motif is not merely a topic about spiritual experience. It traces the personal presence and power of God at work among His people. From the opening movement of creation, Scripture presents the Spirit as life-giving, ordering, empowering, convicting, renewing, and sending. In the Old Testament, the Spirit equips judges, kings, prophets, craftsmen, and servants for appointed work, while the prophets promise a deeper new-covenant renewal in which God's Spirit will be poured out broadly and placed within His people.
In the New Testament, Jesus is conceived by the Spirit, anointed by the Spirit, empowered in ministry by the Spirit, and gives the Spirit to His people. Pentecost does not begin the Spirit's work, but it marks the promised outpouring of the Spirit on the new-covenant people for witness, holiness, prayer, endurance, and hope.