Ephesians 2:8 and Hebrews 12:2 state it clearly, that our faith is imputed to us for righteousness by Christ Alone.

Observe.

Eph 1:1 ¶ Paul, an apostle of Jesus Christ by the will of God, to the saints which are at Ephesus, and to the faithful in Christ Jesus:
Eph 1:2 Grace be to you, and peace, from God our Father, and from the Lord Jesus Christ.
Eph 1:3 ¶ Blessed be the God and Father of our Lord Jesus Christ, who hath blessed us with all spiritual blessings in heavenly places in Christ:
Eph 1:4 According as he hath chosen us in him before the foundation of the world, that we should be holy and without blame before him in love:
Eph 1:5 Having predestinated us unto the adoption of children by Jesus Christ to himself, according to the good pleasure of his will,
Eph 1:6 To the praise of the glory of his grace, wherein he hath made us accepted in the beloved.
Eph 1:7 In whom we have redemption through his blood, the forgiveness of sins, according to the riches of his grace;
Eph 1:8 Wherein he hath abounded toward us in all wisdom and prudence;
Eph 1:9 Having made known unto us the mystery of his will, according to his good pleasure which he hath purposed in himself:
Eph 1:10 That in the dispensation of the fulness of times he might gather together in one all things in Christ, both which are in heaven, and which are on earth; even in him:
Eph 1:11 In whom also we have obtained an inheritance, being predestinated according to the purpose of him who worketh all things after the counsel of his own will:
Eph 1:12 That we should be to the praise of his glory, who first trusted in Christ.
Eph 1:13 In whom ye also trusted, after that ye heard the word of truth, the gospel of your salvation: in whom also after that ye believed, ye were sealed with that holy Spirit of promise,
Eph 1:14 Which is the earnest of our inheritance until the redemption of the purchased possession, unto the praise of his glory.
Eph 1:15 ¶ Wherefore I also, after I heard of your faith in the Lord Jesus, and love unto all the saints,
Eph 1:16 Cease not to give thanks for you, making mention of you in my prayers;
Eph 1:17 That the God of our Lord Jesus Christ, the Father of glory, may give unto you the spirit of wisdom and revelation in the knowledge of him:
Eph 1:18 The eyes of your understanding being enlightened; that ye may know what is the hope of his calling, and what the riches of the glory of his inheritance in the saints,
Eph 1:19 And what is the exceeding greatness of his power to us-ward who believe, according to the working of his mighty power,
Eph 1:20 Which he wrought in Christ, when he raised him from the dead, and set him at his own right hand in the heavenly places,
Eph 1:21 Far above all principality, and power, and might, and dominion, and every name that is named, not only in this world, but also in that which is to come:
Eph 1:22 And hath put all things under his feet, and gave him to be the head over all things to the church,
Eph 1:23 Which is his body, the fulness of him that filleth all in all.
Eph 2:1 ¶ And you hath he quickened, who were dead in trespasses and sins;
Eph 2:2 Wherein in time past ye walked according to the course of this world, according to the prince of the power of the air, the spirit that now worketh in the children of disobedience:
Eph 2:3 Among whom also we all had our conversation in times past in the lusts of our flesh, fulfilling the desires of the flesh and of the mind; and were by nature the children of wrath, even as others.
Eph 2:4 ¶ But God, who is rich in mercy, for his great love wherewith he loved us,
Eph 2:5 Even when we were dead in sins, hath quickened us together with Christ, (by grace ye are saved;)
Eph 2:6 And hath raised us up together, and made us sit together in heavenly places in Christ Jesus:
Eph 2:7 That in the ages to come he might shew the exceeding riches of his grace in his kindness toward us through Christ Jesus.
Eph 2:8 For by grace are ye saved through faith; and that not of yourselves: it is the gift of God:
Eph 2:9 Not of works, lest any man should boast.

Now, where in this is man's faith spoken of the cause of our Justification? Where, in any of the text, is man spoken of having faith alone in Christ alone?

Nowhere.

Now, comes the exclaimation point.

Heb 12:1 ¶ Wherefore seeing we also are compassed about with so great a cloud of witnesses, let us lay aside every weight, and the sin which doth so easily beset us, and let us run with patience the race that is set before us,
Heb 12:2 Looking unto Jesus the author and finisher of our faith; who for the joy that was set before him endured the cross, despising the shame, and is set down at the right hand of the throne of God.

Tell me, beloved... where does man fit in this declaration ""looking unto Jesus, the Author and Finisher of our faith"?

It is absurd to claim that man has something inbetween Author and Finisher.

The Doctrine of Justification by Faith Alone can only mean that we are justified by Christ's faith alone as it is imputed to us as a consequence of our regeneration. We have nothing to contribute to it.

Here is some evedence to add to this.

Ro 8:26 ¶ Likewise the Spirit also helpeth our infirmities: for we know not what we should pray for as we ought: but the Spirit itself maketh intercession for us with groanings which cannot be uttered.
Ro 8:27 And he that searcheth the hearts knoweth what is the mind of the Spirit, because he maketh intercession for the saints according to the will of God.
Ro 8:28 And we know that all things work together for good to them that love God, to them who are the called according to his purpose.
Ro 8:29 ¶ For whom he did foreknow, he also did predestinate to be conformed to the image of his Son, that he might be the firstborn among many brethren.
Ro 8:30 Moreover whom he did predestinate, them he also called: and whom he called, them he also justified: and whom he justified, them he also glorified.
Ro 8:31 ¶ What shall we then say to these things? If God be for us, who can be against us?
Ro 8:32 He that spared not his own Son, but delivered him up for us all, how shall he not with him also freely give us all things?
Ro 8:33 Who shall lay any thing to the charge of God's elect? It is God that justifieth.
Ro 8:34 Who is he that condemneth? It is Christ that died, yea rather, that is risen again, who is even at the right hand of God, who also maketh intercession for us.

Again, i ask you... where is man anything but passive in all these things?

Therefore, to conclude,

Man cannot have sufficient faith on his own merit to be Justified in the sight of God; either before, or after regeneration.

One more thing to add...

The Lord Jesus declared this...

Mt 5:20 For I say unto you, That except your righteousness shall exceed the righteousness of the scribes and Pharisees, ye shall in no case enter into the kingdom of heaven.

The scribes and pharisees were the physical embodiment of the religious man. Yet, the Lord Jesus Christ says plainly, that their righteousness was not enough.

Only Christ ALONE was, and is sufficient to enter into the Kingdom of Heaven.

The Puritans got Justification wrong... as they adopted Luther's doctrine and not the doctrine of the Scripture.

I have read books and sermons and will continue to read them as they are written... yet, this is my apology for the Doctrine of Justification as has been taught since the days of the Reformation.

They are wrong.