Catechism of the Catholic Church

64 Part One knows the Father except the Son and any one to whom the Son chooses to reveal him.” 64 241 For this reason the apostles confess Jesus to be the Word: “In the beginning was the Word, and the Word was with God, and the Word was God”; as “the image of the invisible God”; as the “radiance of the glory of God and the very stamp of his nature.” 65 242 Following this apostolic tradition, the Church confessed at the first ecumenical council at Nicaea (325) that the Son is “consub­ stantial” with the Father, that is, one only God with him. 66 The second ecumenical council, held at Constantinople in 381, kept this expression in its formulation of the Nicene Creed and confessed “the Only Begotten Son of God, born of the Father before all ages. God from God, Light from Light, true God from true God, begot- ten, not made, consubstantial with the Father.” 67 The Father and the Son revealed by the Spirit 243 Before his Passover, Jesus announced the sending of “an- other Paraclete” (Advocate), the Holy Spirit. At work since crea­ tion, having previously “spoken through the prophets,” the Spirit will now be with and in the disciples, to teach them and guide them “into all the truth.” 68 The Holy Spirit is thus revealed as another divine person with Jesus and the Father. 244 The eternal origin of the Holy Spirit is revealed in his mission in time. The Spirit is sent to the apostles and to the Church both by the Father in the name of the Son, and by the Son in person, once he had returned to the Father. 69 The sending of the person of the Spirit after Jesus’ glorification 70 reveals in its fullness the mys- tery of the Holy Trinity. 245 The apostolic faith concerning the Spirit was confessed by the second ecumenical council at Constantinople (381): “I believe in the Holy Spirit, the Lord, the giver of life, who proceeds from the Father.” 71 By this confession, the Church recognizes the 64 Mt 11:27. 65 Jn 1:1; Col 1:15; Heb 1:3. 66 The English phrases “of one being” and “one in being” translate the Greek word homoousios, which was rendered in Latin by consubstantialis. 67 Niceno-Constantinopolitan Creed; cf. DS 150. 68 Cf. Gen 1: 2; Nicene Creed (DS 150); Jn 14:17, 26. 16:13. 69 Cf. Jn 14:26; 15:26; 16:14. 70 Cf. Jn 7:39. 71 Nicene Creed; cf. DS 150. 465 683 2780 687 732 152