The declaration of the unlawfulness of blessings of unions between persons of the same sex is not . . . and is not intended to be, a form of unjust discrimination, but rather a reminder of the truth of the liturgical rite and of the very nature of the sacramentals, as the Church understands them.
The Christian community and its Pastors are called to welcome with respect and sensitivity persons with homosexual inclinations, and will know how to find the most appropriate ways, consistent with Church teaching, to proclaim to them the Gospel in its fullness. At the same time, they should recognize the genuine nearness of the Church – which prays for them, accompanies them and shares their journey of Christian faith – and receive the teachings with sincere openness.
The answer to the proposed dubium does not preclude the blessings given to individual persons with homosexual inclinations, who manifest the will to live in fidelity to the revealed plans of God as proposed by Church teaching. Rather, it declares illicit any form of blessing that tends to acknowledge their unions as such. In this case, in fact, the blessing would manifest not the intention to entrust such individual persons to the protection and help of God, in the sense mentioned above, but to approve and encourage a choice and a way of life that cannot be recognized as objectively ordered to the revealed plans of God.
At the same time, the Church recalls that God Himself never ceases to bless each of His pilgrim children in this world, because for Him “we are more important to God than all of the sins that we can commit”. But he does not and cannot bless sin: he blesses sinful man, so that he may recognize that he is part of his plan of love and allow himself to be changed by him. He in fact “takes us as we are, but never leaves us as we are”.
For the above mentioned reasons, the Church does not have, and cannot have, the power to bless unions of persons of the same sex in the sense intended above.
—from “Responsum of the Congregation for the Doctrine of the Faith to a dubium regarding the blessing of the unions of persons of the same sex,” February 22, 2021