Karl Barth's doctrine of angels has yet to receive sustained scholarly attention. This article begins the work of addressing that omission. In particular, it argues that Barth's unique construal of the angelic being and purpose compels him to propose that the angels have a mediatorial function in the service of God's revelation. While being both necessary to and consistent with Barth's description of the angels’ ontology, this service of mediation contradicts his earlier doctrine of revelation and is superfluous to it.
