" We know from Moses that the world was not in existence before 6,000 years ago. . . . He calls “a spade a spade,” i.e., he employs the term “day” and “evening” without allegory, just as we customarily do . . . we assert that Moses spoke in the literal sense, not allegorically or figuratively, i.e., that the world, with all its creatures, was created within six days, as the words read. If we do not comprehend the reason for this, let us remain pupils and leave the job of the teacher to the Holy Spirit. "

― Martin Luther , Lectures on Genesis: Chapters 1-5 (Luther's Works, #1)