Genesis 43:33

The men marvelled one at another They were greatly surprised how he should know their respective ages, so as to place them, or cause them to sit down, exactly according to their seniority, as if he could certainly divine. Some, indeed, think they placed themselves so, according to their custom; but if so, why should particular notice be taken of it? And why should they marvel at it? This was, as it were, a preparative to the discovery of himself.