God's Spirit unites believers to Christ, conforms them to his image and equips them for witness and ministry - which makes the doctrine of the Spirit inseparable from the doctrine of salvation rather than an appendix to it.

J. V. Fesko reflects on the person and work of the Holy Spirit in the application of Christ's work for the salvation of sinners, combining biblical, historical and theological study. Written from a confessionally Reformed perspective in conversation with the great creeds, it is a thorough and trustworthy guide to the Spirit's role rather than a survey of opinions.