Saint Paul and Luther likely had similar personalities. So Luther goes to Paul to find what he needs because both of them are struggling with the same issue: I want to be a good boy and I can’t. I want to be perfect and I can’t. Ah, God loves me unconditionally—hallelujah! Luther jumps up and Paul jumps up—“God loves me unconditionally!” But then they make that the whole gospel; every emphasis of one point is necessarily a deemphasis of another.
