Only Protestants buy into the imputed thing. It was an invention of Luther. Catholics believe in "imparted" righteousness...which is biblical. And orthodox believers believe in a real oneness with God...not just an assumed righteousness. So then you are in the minority actually.
So, just because the righteousness OF CHRIST, the imputation thereof to the believer is not found in Scripture, you want to make your own doctrine?
What is not specifically SAID is definitely IMPLIED, the righteousness of Christ TO the believer.
2 Corinthians 5:21
For he hath made him to be sin for us - The Greek here is, ‘for him who knew no sin, he hath made sin, or a sin-offering for us.’ The design of this very important verse is, to urge the strongest possible reason for being reconciled to God. This is implied in the word (γὰρ gar) “for.”
(Certainly Christ’s being made sin, is not to be explained of his being made sin in the abstract, nor of his having actually become a sinner; yet it does imply, that sin was charged on Christ, or that it was imputed to him, and that he became answerable for it. Nor can this idea be excluded, even if we admit that “sin-offering” is the proper rendering of ἁμαρτία hamartia in the passage. “That Christ,” says an old divine commenting on this place, “was made sin for us, because he was a sacrifice for sin, we confess; but therefore was he a sacrifice for sin because our sins were imputed to him, and punished in him.” The doctrine of imputation of sin to Christ is here, by plain enough inference at least. The rendering in our Bibles, however, asserts it in a more direct form. Nor, after all the criticism that has been expended on the text, does there seem any necessity for the abandonment of that rendering, on the part of the advocate of imputation. For first ἁμαρτία hamartia in the Septuagint, and the corresponding אשׁם 'aashaam in the Hebrew, denote both the sin and the sin-offering, the peculiar sacrifice and the crime itself. Second, the antithesis in the passage, so obvious and beautiful, is destroyed by the adoption of “sin-offering.” Christ was made sin, we righteousness.
There seems in our author’s comment on this place, and also at Rom. 5, an attempt to revive the oft-refuted objection against imputation, namely, that it involves something like a transference of moral character, an infusion, rather than an imputation of sin or righteousness. Nothing of this kind is at all implied in the doctrine. Its advocates with one voice disclaim it; and the reader will see the objection answered at length in the supplementary notes at Rom. 4 and Rom. 5. What then is the value of such arguments or insinuations as these: “All such views as go to make the Holy Redeemer a sinner, or guilty, or deserving of the sufferings he endured, border on blasphemy,” etc. Nor is it wiser to affirm that “if Christ was properly guilty, it would make no difference in this respect, whether it was by his own fault or by imputation.” What may be meant in this connection by “properly guilty,” we know not. But this is certain, that there is an immense difference between Christ’s having the guilt of our iniquities charged on him, and having the guilt of his own so charged.
It is admitted in the commentary, that God “treated Christ as if he had been a sinner,” and this is alleged as the probable sense of the passage. But this treatment of Christ on the part of God, must have some ground, and where shall we find it, unless in the imputation of sin to him?
They who thus become righteous, or are justified, are justified on his plan, and by a scheme which he has devised
. Locke renders this: “that we, in and by him, might be made righteous, by a righteousness imputed to us by God.” The idea is, that all our righteousness in the sight of God we receive in and through a Redeemer. All is to be traced to him. This verse contains a beautiful epitome of the whole plan of salvation, and the uniqueness of the Christian scheme. On the one hand, one who was perfectly innocent, by a voluntary substitution, is treated As if he were guilty; that is, is subjected to pains and sorrows which if he were guilty would be a proper punishment for sin: and on the other, they who are guilty and who deserve to be punished, are treated, through his vicarious sufferings, as if they were perfectly innocent; that is, in a manner which would be a proper expression of God’s approbation if he had not sinned.
The whole plan, therefore, is one of substitution; and without substitution, there can be no salvation. Innocence voluntarily suffers for guilt, and the guilty are thus made pure and holy, and are saved. The greatness of the divine compassion and love is thus shown for the guilty; and on the ground of this it is right and proper for God to call on people to be reconciled to him. It is the strongest argument that can be used. When God has given his only Son to the bitter suffering of death on the cross in order that we may be reconciled, it is the highest possible argument which can be used why we should cease our opposition to him, and become his friends.
(See the supplementary notes on Rom_1:17; note at Rom_3:21. See also the additional note above on the first clause of the verse.
The “righteousness of God,” is doubtless that righteousness which the divine Saviour worked out, in his active and passive obedience, and if ever any of the guilty race of Adam are “treated as righteous” by God, it must be solely on the ground of its imputation.)
Barnes Notes.
More can be said, but I am not going into circular reasoning with you.