Chapter IX.--The spiritual meaning of circumcision.
He speaks moreover concerning our ears, how He hath circumcised both them and our heart. The Lord saith in the prophet, "In the hearing of the ear they obeyed me."  And again He saith, "By hearing, those shall hear who are afar off; they shall know what I have done."  And, "Be ye circumcised in your hearts, saith the Lord."  And again He says, "Hear, O Israel, for these things saith the Lord thy God."  And once more the Spirit of the Lord proclaims, "Who is he that wishes to live for ever? By hearing let him hear the voice of my servant."  And again He saith, "Hear, O heaven, and give ear, O earth, for God  hath spoken."  These are in proof.  And again He saith, "Hear the word of the Lord, ye rulers of this people."  And again He saith, "Hear, ye children, the voice of one crying in the wilderness."  Therefore He hath circumcised our ears, that we might hear His word and believe, for the circumcision in which they trusted is abolished.  For He declared that circumcision was not of the flesh, but they transgressed because an evil angel deluded them.  He saith to them, "These things saith the Lord your God"--(here  I find a new  commandment)--"Sow not among thorns, but circumcise yourselves to the Lord."  And why speaks He thus: "Circumcise the stubbornness of your heart, and harden not your neck?"  And again: "Behold, saith the Lord, all the nations are uncircumcised  in the flesh, but this people are uncircumcised in heart."  But thou wilt say, "Yea, verily the people are circumcised for a seal." But so also is every Syrian and Arab, and all the priests of idols: are these then also within the bond of His covenant?  Yea, the Egyptians also practise circumcision. Learn then, my children, concerning all things richly,  that Abraham, the first who enjoined circumcision, looking forward in spirit to Jesus, practised that rite, having received the mysteries  of the three letters. For [the Scripture] saith, "And Abraham circumcised ten, and eight, and three hundred men of his household."  What, then, was the knowledge given to him in this? Learn the eighteen first, and then the three hundred.  The ten and the eight are thus denoted--Ten by I, and Eight by E.  You have [the initials of the, name of] Jesus. And because  the cross was to express the grace [of our redemption] by the letter T, he says also, "Three Hundred." He signifies, therefore, Jesus by two letters, and the cross by one. He knows this, who has put within us the engrafted  gift of His doctrine. No one has been admitted by me to a more excellent piece of knowledge  than this, but I know that ye are worthy.