In this sense we must understand the words “And Moses hid his face, for he was afraid to look upon God” (Exod. iii. 6), though retaining also the literal meaning of the passage, that Moses was afraid to gaze at the light which appeared to his eye; but it must on no account be assumed that the Being which is exalted far above every imperfection can be perceived by the eye. This act of Moses was highly commended by God, who bestowed on him a well deserved portion of His goodness, as it is said: “And the similitude of the Lord shall he behold” (Num. xii. 8). This, say our Sages, was the reward for having previously hidden his face, lest he should gaze at the Eternal. (Talm. B. Berakot Fa.) But “the nobles of the Children of Israel” were impetuous, and allowed their thoughts to go unrestrained: what they perceived was but imperfect. Therefore it is said of them, “And they saw the God of Israel, and there was under his feet,” etc. (Exod. xxiv. 10); and not merely, “and they saw the God of Israel”; the purpose of the whole passage is to criticize their act of seeing and not to describe it. They are blamed for the nature of their perception, which was to a certain extent corporeal—a result which necessarily followed, from the fact that they ventured too far before being perfectly prepared. They deserved to perish, but at the intercession of Moses this fate was averted by God for the time. They were afterwards burnt at Taberah, except Nadab and Abihu, who were burnt in the Tabernacle of the congregation, according to what is stated by authentic tradition. (Midr. Rabba ad locum.) If such was the case with them, how much more is it incumbent on us who are inferior, and on those who are below us, to persevere in perfecting our knowledge of the elements, and in rightly understanding the preliminaries which purify the mind from the defilement of error; then we may enter the holy and divine camp in order to gaze: as the Bible says, “And let the priests also, which come near to the Lord, sanctify themselves, lest the Lord break forth upon them” (Exod. xix. 22). Solomon, also, has cautioned all who endeavour to attain this high degree of knowledge in the following figurative terms, “Keep thy foot when thou goest to the house of God” (Eccles. iv. 17).