Magnifica Humanitas §88

⁸⁸ For the Christian community, solidarity finds its source in the mystery of Christ and is nourished by the Eucharist. Solidarity emerges from communion in faith and the Sacraments: Baptism and Confirmation unite us in Christ, so that we may become one Body and one Spirit, one heart and one soul (cf. Eph 4:4; Acts 4:32). The Eucharist, which is the sacrament of unity, nurtures our belonging to the Body of Christ and teaches us how to share. The diverse sensibilities present in the Church and the strong convictions that animate each person are a source of richness if they remain anchored in the certainty that unity is a gift received and a responsibility to be fulfilled.