Karl Barth on the What Christian Freedom is ForThe Epistle to the Romans, on Romans vv. 16-18 (Oxford University Press: 1968), p. 519.
The strength of the strong is confronted by an iron barrier. We now stand before the KRISIS of what we think to be our freedom, of the freedom in which we rejoice as our good. But it is good only when it is the freedom of the Kingdom of God. Do we understand this? Is our freedom nothing but the freedom which God takes to Himself in our doing or in our not doing? Or is it a freedom which we take to ourselves in His name? Or do we perceive that our freedom is important only when it demonstrates His freedom? Or do we suppose our freedom to be in itself important? In displaying our strength, are we anxious that — righteousness and peace and joy should be made known unto men? Or are we, in fact, in the end concerned with— eating and drinking?