For some reason, I no longer get teary-eyed when listening to a preacher praise a man who kicked out the son he had conceived with a slave once he finally got himself a legitimate heir, and who “shut down his thinking” in preparation for slicing open his 12-year-old boy with a knife because he heard a voice telling him to. My patience has long since run out for the mindset that has so thoroughly surrendered itself to fideism as to assert, “If you don’t understand, you believe.” It’s certainly not a new attitude: Luther said “we must simply maintain that when we hear God saying something, we are to believe it and not to debate about it but rather take our intellect captive in the obedience of Christ” (Lectures on Genesis, Ch. 3, v. 5).
Even if you don’t understand what it is your are professing to believe, you must believe it nonetheless. It’s no less absurd a proposition than the absurdities that are being “believed” in this way. One example is the Real Presence of Christ in the communion wafer, which Luther held to as an essential point of doctrine. “How, then, shall we understand those things which are beyond all our senses, in the Word alone? Thus it is in the Word alone that the bread is the body of Christ, that the wine is the blood of Christ. This must be believed; it must not and cannot be understood” (Id.).