THE SUPERNATURAL LIFE was worked out fully. Here I shall repeat the main points very briefly. If Christ is the Life, then He must live in us : and that He really does so, St. Paul bears witness when He says “I live, lyet now not I, but Christ liveth in me.” The idea of one. being living in another is already familiar to us in the case of the cells of the body : here the cells are living cells : yet they live not with some independent life of their own but with the life of the whole body. The cells of my body live with my life : it is I that live in them. This is shown to be more than a suggestive comparison by St. Paul’s clear working out of the idea of the Church as Christ’s body. The Church is a body, a living thing, united to Christ as really as His natural body was upon this earth. He is the Head, the directing principle, union with which is a condition of life in the Body: and every member of the Church is a cell in the body and, as such, lives with the life of Christ, whose Body the Church is. This membership of Christ’s Body — what we call incorporation with Christ — is the condition on which He can live in us. Only if we are members of a Church thus vitally united with Him does His life flow through us. are incorporated — built into the Mystical Body — ^y baptism. We speak of baptism as a re-birth, a being born again. And rightly. Birth means entry into life. By birth we enter into the life of man. By re-birth we enter into the life of Christ: equally the life of Christ enters into us. Thus Our Lord Himself 107