Mathias Sånglöf compares occurrences of the Spirit of God in Pauline and Johannine texts on a lexical, grammatical, and conceptual level and asks the following questions: What are the common traits associated with the Spirit? What is the unique profile of each corpus? Can one corpus help us understand the other better? He pursues this by first outlining similarities and differences at the lexical and grammatical levels and then by identifying major ideas connected with the Spirit. Both Paul and John link the Spirit with God, Jesus, and believers in a salvation-historical perspective. Conceptually, two themes guide the analysis: Christ and the coming of the Spirit, and the Spirit's transformative work in believers. In both corpora, the Spirit's coming is rooted in Christ's death and resurrection. The Spirit also enables believers to become children of God - Paul through "adoption," John through being "begotten" - two models expressing the same transformation. Further parallels concern moral renewal and knowledge of God, even if each corpus develops these ideas with different images. Placed side by side, these texts reveal substantial common ground while sharpening the distinct profile of each corpus. Mathias Sånglöf thus clarifies how similarities and differences between Paul and John enrich the interpretation of both.