Kierkegaard acknowledges this. He states that faith is simultaneously absurd but also absolutely necessary, kind of a “damned if you, damned if you don’t” situation. It doesn’t make sense to rely on faith but you need to do so, and somehow having faith is the greatest aim one can have even while it seems so irrational and even scary at times. He says the best path is to submit to faith, and embrace its absurdity as part of life. It’s really worth reading his works on this. Very poignant and interesting perspective from a very pained man even if you don’t agree, that’s helped me a lot at several points in my own life.

How is this different from many earlier theologians and philosophers? You’re also already doing philosophy/theology by arguing one is already in sin and therefore can’t analyze it well, and then referencing Kierkegaard’s analysis to do so.