CCC 535 Jesus’ public life begins with his baptism by John in the Jordan.1 John preaches “a baptism of repentance for the forgiveness of sins”.2 A crowd of sinners3 – tax collectors and soldiers, Pharisees and Sadducees, and prostitutes- come to be baptized by him. “Then Jesus appears.” The Baptist hesitates, but Jesus insists and receives baptism. Then the Holy Spirit, in the form of a dove, comes upon Jesus and a voice from heaven proclaims, “This is my beloved Son.”4 This is the manifestation (“Epiphany”) of Jesus as Messiah of Israel and Son of God.

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.5 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.”6 Jesus will say of the Spirit: “I came to cast fire upon the earth; and would that it were already kindled!”7 In the form of tongues “as of fire,” the Holy Spirit rests on the disciples on the morning of Pentecost and fills them with himself8 The spiritual tradition has retained this symbolism of fire as one of the most expressive images of the Holy Spirit’s actions.9 “Do not quench the Spirit.”10

CCC 2447 The works of mercy are charitable actions by which we come to the aid of our neighbor in his spiritual and bodily necessities.11 Instructing, advising, consoling, comforting are spiritual works of mercy, as are forgiving and bearing wrongs patiently. The corporal works of mercy consist especially in feeding the hungry, sheltering the homeless, clothing the naked, visiting the sick and imprisoned, and burying the dead.12 Among all these, giving alms to the poor is one of the chief witnesses to fraternal charity: it is also a work of justice pleasing to God:13
He who has two coats, let him share with him who has none and he who has food must do likewise.14 But give for alms those things which are within; and behold, everything is clean for you.15 If a brother or sister is ill-clad and in lack of daily food, and one of you says to them, “Go in peace, be warmed and filled,” without giving them the things needed for the body, what does it profit?16

1 Cf. Lk 3:23; Acts 1:22.
2 lK 3:3.
3 Cf. Lk 3:10-14; Mt 3:7; 21:32.
4 Mt 3:13-17.
5 Sir 48:1; cf. 1 Kings 18:38-39.
6 Lk 1:17; 3:16.
7 Lk 12:49.
8 Acts 2:3-4.
9 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.
10 1 Thess 5:1.
11 Cf. Isa 58:6-7; Heb 13:3.
12 Cf. Mt 25:31-46.
13 Cf. Tob 4:5-11; Sir 17:22; Mt 6:2-4.
14 Lk 3:11.
15 Lk 11:41.
16 Jas 2:15-16; cf. 1 Jn 3:17.