Is it important that God be Trinity?

A biblical point of view

Abstract

What impact does the notion of God as Trinity have upon Christian society? The question was asked by Karl Rahner who saw that if the doctrine of the Trinity were excluded from Christianity it would, unfortunately, not change much in the practice of religious life. The author begins with the revelation of God in the Old Testament (focused upon the oneness and transcendence of God) and comes to Jesus and to the revelation of God who has “opened” to us his Being as communion. What is presented thus is an understanding of how Jesus lived out his relationship with God, which can become paradigmatic for the believer, showing in this way the importance of the revelation of God-communion for the fulfilment of the human vocation.