But when men and women approach God in a condescending spirit, unconscious alike of their own sinfulness and unworthiness, and of his blinding holiness and overwhelming majesty, then they object to these mysteries and are impatient because they cannot understand them.

It was the same in our Lord’s day.  When Jesus was teaching about the inner reality of the Blessed Sacrament, that it was to be his Risen and Ascended Body, he said, “…unless you eat the flesh of the Son of Man and drink his blood, you have no life in you”.  And we read that many of his disciples said, “This teaching is difficult; who can accept it?”  “Because of this many of his disciples turned back and no longer went about with him.  So Jesus asked the twelve, ‘Do you also wish to go away?’  Simon Peter answered him, ‘Lord, to whom can we go?  You have the words of eternal life’ (NRSV, John 6: 53,60, 66-68) (our emphasis).  So the worldly wise left him and we know no more of them: but the humble trustful Apostles remained with him and are with him now with the rest of the Blessed Saints in Heaven.