CathInfo.com

Pfeiffer:

In addition, it is found even before this millennium in the very early years of the Church without a single dissenting voice.

Profession of faith

1, I, Pius, bishop of the catholic church, with firm faith believe and profess each and every article contained in the profession of faith which the holy Roman church uses, namely:

[...]

6. I embrace and accept the whole and every part of what was defined and declared by the holy council of Trent concerning original sin and justification.

[...]

DECREE ON JUSTIFICATION

Proem.

Whereas there is, at this time, not without the shipwreck of many souls, and grievous detriment to the unity of the Church, a certain erroneous doctrine disseminated touching Justification; the sacred and holy, oecuмenical and general Synod of Trent, lawfully assembled in the Holy Ghost,–the most reverend lords, Giammaria del Monte, bishop of Palaestrina, and Marcellus of the title of the Holy Cross in Jerusalem, priest, cardinals of the holy Roman Church, and legates apostolic a latere, presiding therein, in the name of our most holy father and lord in Christ, Paul III., by the providence of God, Pope,-purposes, unto the praise and glory of Almighty God, the tranquillising of the Church, and the salvation of souls, to expound to all the faithful of Christ the true and sound doctrine touching the said Justification; which (doctrine) the sun of justice, Christ Jesus, the author and finisher of our faith, taught, which the apostles transmitted, and which the Catholic Church, the Holy Ghost reminding her thereof, has always retained; most strictly forbidding that any henceforth presume to believe, preach, or teach, otherwise than as by this present decree is defined and declared.

[...]

CHAPTER VII.
 What the justification of the impious is, and what are the causes thereof.

[...]

Of this Justification the causes are these: the final cause indeed is the glory of God and of Jesus Christ, and life everlasting; while the efficient cause is a merciful God who washes and sanctifies gratuitously, signing, and anointing with the holy Spirit of promise, who is the pledge of our inheritance; but the meritorious cause is His most beloved only-begotten, our Lord Jesus Christ, who, when we were enemies, for the exceeding charity wherewith he loved us, merited Justification for us by His most holy Passion on the wood of the cross, and made satisfaction for us unto God the Father; the instrumental cause is the sacrament of baptism, which is the sacrament of faith, without which (faith) no man was ever justified; lastly, the alone formal cause is the justice of God, not that whereby He Himself is just, but that whereby He maketh us just, that, to wit, with which we being endowed by Him, are renewed in the spirit of our mind, and we are not only reputed, but are truly called, and are, just, receiving justice within us, each one according to his own measure, which the Holy Ghost distributes to every one as He wills, and according to each one’s proper disposition and co-operation.

[...]