Since humans are made in the image of God, a Christian understanding of an adequate anthropology of humans' social relations is informed by the divine attributes, what can be known of God's activity and God's presence in human affairs. Theologians of the "Communio" school such as Hans Urs von Balthasar, Henri de Lubac, and Joseph Ratzinger (later Pope Benedict XVI) locate the reciprocal dynamism between God and God's creatures in the liturgical action of sacrament, celebrating the sacred mysteries in Eucharistic communion, in a hermeneutic of continuity and apostolic unity.