Heb 12, 29 Our God is a consuming fire

(Heb 12, 29) Our God is a consuming fire
[29] For our God is a consuming fire.

(CCC 696) Fire. While water signifies birth and the fruitfulness of life given in the Holy Spirit, fire symbolizes the transforming energy of the Holy Spirit's actions. The prayer of the prophet Elijah, who "arose like fire" and whose "word burned like a torch," brought down fire from heaven on the sacrifice on Mount Carmel (Sir 48:1; cf. 1 Kings 18:38-39). This event was a "figure" of the fire of the Holy Spirit, who transforms what he touches. John the Baptist, who goes "before [the Lord] in the spirit and power of Elijah," proclaims Christ as the one who "will baptize you with the Holy Spirit and with fire" (Lk 1:17; 3:16). Jesus will say of the Spirit: "I came to cast fire upon the earth; and would that it were already kindled!" (Lk 12:49). In the form of tongues "as of fire," the Holy Spirit rests on the disciples on the morning of Pentecost and fills them with himself (Acts 2:3-4). The spiritual tradition has retained this symbolism of fire as one of the most expressive images of the Holy Spirit's actions (Cf. St. John of the Cross, The Living Flame of Love, in The Collected Works of St. John of the Cross, tr. K. Kavanaugh, OCD, and O. Rodriguez, OCD (Washington DC: Institute of Carmelite Studies, 1979), 577 ff.). "Do not quench the Spirit” (1 Thess 5:19). (CCC 1127) Celebrated worthily in faith, the sacraments confer the grace that they signify (Cf. Council of Trent (1547): DS 1605; DS 1606.). They are efficacious because in them Christ himself is at work: it is he who baptizes, he who acts in his sacraments in order to communicate the grace that each sacrament signifies. The Father always hears the prayer of his Son's Church which, in the epiclesis of each sacrament, expresses her faith in the power of the Spirit. As fire transforms into itself everything it touches, so the Holy Spirit transforms into the divine life whatever is subjected to his power. (CCC 1031) The Church gives the name Purgatory to this final purification of the elect, which is entirely different from the punishment of the damned (Cf. Council of Florence (1439): DS 1304; Council of Trent (1563): DS 1820; (1547): 1580; see also Benedict XII, Benedictus Deus (1336): DS 1000). The Church formulated her doctrine of faith on Purgatory especially at the Councils of Florence and Trent. The tradition of the Church, by reference to certain texts of Scripture, speaks of a cleansing fire (Cf. 1 Cor 3:15; 1 Pet 1:7): As for certain lesser faults, we must believe that, before the Final Judgment, there is a purifying fire. He who is truth says that whoever utters blasphemy against the Holy Spirit will be pardoned neither in this age nor in the age to come. From this sentence we understand that certain offenses can be forgiven in this age, but certain others in the age to come (St. Gregory the Great, Dial. 4, 39: PL 77, 396; cf. Mt 12:31).