Oath against all heresy?

Does anyone have the text of the oath or whatever that converts had to recite before the Bishop when converting before RCIA came about?

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I don’t know when RCIA was instituted, but it was probably after my uncle was received into the Church as he did not have RCIA or any similar process. He simply took instructions from the priest until both were satisfied that he wanted to be received, affirmed his baptismal promises, made his Profession of Faith, was confirmed and received his first Communion.

That’s it, no oath.

I know the oath you are talking about, today our sermon at the FSSP parish I attend actually brought this point up about the difference in the oath now and the traditional oath. I tried to look for it on the internet but I couldn’t find it.

Are you talking about the profession of faith in the Old Rite?

I (…) years of age, born outside the Catholic Church, have held and believed errors contrary to her teaching. Now, enlightened by divine grace, I kneel before you, Reverend Father (name), having before my eyes and touching with my hand the holy Gospels. And with firm faith I believe and profess each and all the articles contained in the Apostles’ Creed, that is: I believe in God, the Father almighty, Creator of heaven and earth; and in Jesus Christ, His only Son, our Lord, who was conceived by the Holy Spirit, born of the Virgin Mary, suffered under Pontius Pilate, was crucified, died, and was buried; He descended into hell, the third day He arose again from the dead; He ascended into heaven, and sits at the right hand of God, the Father almighty,from there He shall come to judge the living and the dead. I believe in the Holy Spirit; the holy Catholic Church; the communion of saints; the forgiveness of sins; the resurrection of the body, and life everlasting. Amen.

I firmly admit and embrace the apostolic and ecclesiastical
traditions and all the other constitutions and ordinances of the Church.

I admit the Sacred Scriptures in the sense which has been held
and is still held by holy Mother Church, whose duty it is to judge the true sense and interpretation of Sacred Scripture, and I shall never accept or interpret them in a sense contrary to the
unanimous consent of the fathers.

I profess that the sacraments of the New Law are truly and precisely seven in number, instituted for the salvation of mankind, though all are not necessary for each individual: baptism,
confirmation, holy Eucharist, penance, anointing of the sick, holy orders, and matrimony. I profess that all confer grace, and that baptism, confirmation, and holy orders cannot be repeated without sacrilege. I also accept and admit the ritual of the Catholic Church in the solemn administration of all the aforementioned sacraments.

I accept and hold in each and every part all that has been defined and declared by the Sacred Council of Trent concerning original sin and justification. I profess that in the Mass there is offered to God a true, real, and propitiatory sacrifice for the living and the dead; that in the holy sacrament of the Eucharist the body and blood together with the soul and divinity of our Lord Jesus Christ is really, truly, and substantially present, and that there takes place in the Mass what the Church calls transubstantiation, which is the change of all the substance of bread into the body of Christ and of all substance of wine into His blood. I confess also that in
receiving under either of these species one receives Jesus Christ whole and entire.

I firmly hold that Purgatory exists and that the souls detained there can be helped by the prayers of the faithful.

Likewise I hold that the saints, who reign with Jesus Christ, should be venerated and invoked, that they offer prayers to God for us, and that their relics are to be venerated.

I firmly profess that the images of Jesus Christ and of the Mother of God, ever a Virgin, as well as of all the saints should be given due honor and veneration. I also affirm that Jesus Christ left to the Church the faculty to grant indulgences, and
that their use is most salutary to the Christian people. I
recognize the holy, Roman, Catholic, and apostolic Church as the
mother and teacher of all the churches, and I promise and swear
true obedience to the Roman Pontiff, successor of St. Peter, the
prince of the apostles and vicar of Jesus Christ.

Moreover, without hesitation I accept and profess all that has
been handed down, defined, and declared by the sacred canons and by the general councils, especially by the Sacred Council of
Trent and by the Vatican General Council, and in special manner
all that concerns the primacy and infallibility of the Roman Pontiff. At the same time I condemn and reprove all that the Church has condemned and reproved. This same Catholic faith, outside of which none can be saved, I now freely profess and I truly adhere to it. With the help of God, I promise and swear to maintain and profess this faith entirely, inviolately, and with firm constancy until
the last breath of life. And I shall strive, as far as possible, that this same faith shall be held, taught, and publicly professed by all who depend on me and over whom I shall have charge.

So help me God and these holy Gospels.

(The Roman Ritual)

I’m not sure if this is what you are referring to, but it is the oath against modernism that Priest used to have to say…

dailycatholic.org/oathvmod.htm

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