Hence , systematic theologies progress from the doctrine of the godhead , or theology proper , to christology , pneumatology , angelology , soteriology , and so on , treating each theme exhaustively .

因此，系统神学是从神格（godhead）的教义，或神学本体（theologyproper），进展到基督论，圣灵论，天使论，救恩论等等，详尽地处理每个主题。