פירוש על קידושין 65:12

The baraita does not really need to tell people not to close their eyes to ignore a sage once the sage comes into view. The baraita is not addressing people who would willfully break the law. Rather the baraita is addressing one who might close his eyes before the sage is even close enough such that the obligation to rise kicks in. Technically this would be allowed. Therefore the Torah states “you shall fear.” A person should not intentionally put himself in a position to avoid fulfilling a commandment.