Epistle of Barnabas

Let us further inquire whether the Lord took any care to foreshadow the water [of baptism] and the cross. Concerning the water, indeed, it is written, in reference to the Israelites, that they should not receive that baptism which leads to the remission of sins, but should procure another for themselves. The prophet therefore declares, "Be astonished, O heaven, and let the earth tremble at this, because this people hath committed two great evils: they have forsaken Me, a living fountain, and have hewn out for themselves broken cisterns."

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." ... 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."

He has therefore abolished these things, that the new law of our Lord Jesus Christ, which is without the yoke of necessity, might have a human oblation. And again He says to them, "Did I command your fathers, when they went out from the land of Egypt, to offer unto Me burnt-offerings and sacrifices? But this rather I commanded them, Let no one of you cherish any evil in his heart against his neighbour, and love not an oath of falsehood." We ought therefore, being possessed of understanding, to perceive the gracious intention of our Father; for He speaks to us, desirous that we, not going astray like them, should ask how we may approach Him. To us, then, He declares, "A sacrifice [pleasing] to God is a broken spirit; a smell of sweet savour to the Lord is a heart that glorifieth Him that made it." We ought therefore, brethren, carefully to inquire concerning our salvation, lest the wicked one, having made his entrance by deceit, should hurl us forth from our [true] life.

Further, also, it is written concerning the Sabbath in the Decalogue which [the Lord] spoke, face to face, to Moses on Mount Sinai, "And sanctify ye the Sabbath of the Lord with clean hands and a pure heart." And He says in another place, "If my sons keep the Sabbath, then will I cause my mercy to rest upon them."