The Epistle of Barnabas

But why are there three boys who sprinkle? As a testimony to Abraham, Isaac, and Jacob, for these are great before God.

And why was the wool put on the wood? Because the kingdom

But why are the wool and the hyssop together? Because in his kingdom there shall be evil and foul days, in which we shall be saved, for he also who has pain in his flesh is cured by the foulness of the hyssop.

And for this reason the things which were thus done are plain to us, but obscure to them, because they did not hear the Lord’s voice.

For he speaks again concerning the ears, how[*](The circumcision) he circumcised our hearts; for the Lord says in the Prophet: In the hearing of the ear they obey me. And again he says, They who are afar off shall hear clearly, they shall know the things that I have done, and Circumcise your hearts, saith the Lord.

And again he says, Hear, O Israel, thus saith the Lord thy God, and again the Spirit of the Lord prophesies, Who is he that will live for ever? Let him hear the voice of my servant.

And again he says, Hear, O heaven, and give ear, O earth, for the Lord hath spoken these things for a testimony. And again he says, Hear the word of the Lord, ye rulers of this people. And again he says, Hear, O children, a voice of one crying in the wilderness. So then he circumcised our hearing in order that we should hear the word and believe.

But moreover the circumcision in which they trusted has been abolished. For he declared that circumcision was not of the flesh, but they erred because an evil angel

He says to them, Thus saith the Lord your God (here I find a commandment), Sow not among thorns, be circumcised to your Lord. And what does he say? Circumcise the hardness of your heart, and stiffen not your neck. Take it again: Behold, saith the Lord, all the heathen are uncircumcised in the foreskin, but this people is uncircumcised in heart.