Biblical counselor Colin R. McCulloch retrieves John Owen’s theology of Trinitarian sanctification to address modern concerns in counseling methodology. McCulloch examines two divergent approaches to sanctification within the biblical counseling movement, suggesting that Owen’s emphasis on Spirit-infused habitual grace provides a more holistic vision for soul care. Far from a mere historical study, McCulloch’s incisive analysis will help pastors and laymen alike minister to sinners and sufferers in Christ’s church.