Pope Eugene IV, The Council of Florence, “Exultate Deo,” Nov. 22, 1439: “Holy baptism, which is the gateway to the spiritual life, holds the first place among all the sacraments; through it we are made members of Christ and of the body of the Church. And since death entered the universe through the first man, ‘unless we are born again of water and the Spirit, we cannot,’ as the Truth says, ‘enter into the kingdom of heaven’ [John 3:5]. The matter of this sacrament is real and natural water.”