Barth on universalism and the fear of antinomianism
One question should for a moment be asked, in view of the “danger” with which one may see this concept [i.e., universalism] gradually surrounded. What of the “danger” of the eternally skeptical-critical theologian who is ever and again suspiciously questioning, because fundamentally always legalistic and therefore in the main morosely gloomy? Is not his presence among us currently more threatening than that of the unbecomingly cheerful indifferentism or even antinomianism, to which one with a certain understanding of universalism could in fact deliver himself? This much is certain, that we have no theological right to set any sort of limits to the loving-kindness of God which has appeared in Jesus Christ. Our theological duty is to see and understand it as being still greater than we had seen before.
–Karl Barth, The Humanity of God, p. 62