The beginning of the Good News about Jesus Christ, the Son of God. It is written in the book of the prophet Isaiah:
Look, I am going to send my messenger before you;
he will prepare your way.
A voice cries in the wilderness:
Prepare a way for the Lord, make his paths straight.
and so it was that John the Baptist appeared in the wilderness, proclaiming a baptism of repentance for the forgiveness of sins. All Judaea and all the people of Jerusalem made their way to him, and as they were baptised by him in the river Jordan they confessed their sins. John wore a garment of camel-skin, and he lived on locusts and wild honey. In the course of his preaching he said, ‘Someone is following me, someone who is more powerful than I am, and I am not fit to kneel down and undo the strap of his sandals. I have baptised you with water, but he will baptise you with the Holy Spirit.’
Source: Jerusalem Bible
Catechism of the Catholic Church
The Good News: God has sent his Son
422 ‘But when the time had fully come, God sent forth his Son, born of a woman, born under the law, to redeem those who were under the law, so that we might receive adoption as sons.’ This is ‘the gospel of Jesus Christ, the Son of God’:’ God has visited his people. He has fulfilled the promise he made to Abraham and his descendants. He acted far beyond all expectation – he has sent his own ‘beloved Son’.
423 We believe and confess that Jesus of Nazareth, born a Jew of a daughter of Israel at Bethlehem at the time of King Herod the Great and the emperor Caesar Augustus, a carpenter by trade, who died crucified in Jerusalem under the procurator Pontius Pilate during the reign of the emperor Tiberius, is the eternal Son of God made man. He ‘came from God’, ‘descended from heaven’, and ‘came in the flesh’. For ‘the Word became flesh and dwelt among us, full of grace and truth; we have beheld his glory, glory as of the only Son from the Father. . . And from his fullness have we all received, grace upon grace.’
424 Moved by the grace of the Holy Spirit and drawn by the Father, we believe in Jesus and confess: ‘You are the Christ, the Son of the living God.’ On the rock of this faith confessed by St. Peter, Christ built his Church.
“To preach. . . the unsearchable riches of Christ”
425 The transmission of the Christian faith consists primarily in proclaiming Jesus Christ in order to lead others to faith in him. From the beginning, the first disciples burned with the desire to proclaim Christ: “We cannot but speak of what we have seen and heard.”‘ It And they invite people of every era to enter into the joy of their communion with Christ:
That which was from the beginning, which we have heard, which we have seen with our eyes, which we have looked upon and touched with our hands, concerning the word of life – the life was made manifest, and we saw it, and testify to it, and proclaim to you the eternal life which was with the Father and was made manifest to us- that which we have seen and heard we proclaim also to you, so that you may have fellowship with us; and our fellowship is with the Father and with his Son Jesus Christ. And we are writing this that our joy may be complete.
For the leader; “upon the gittith.” A psalm of the Korahites.
How lovely your dwelling, O LORD of hosts!
My soul yearns and pines for the courts of the LORD. My heart and flesh cry out for the living God.
As the sparrow finds a home and the swallow a nest to settle her young, My home is by your altars, LORD of hosts, my king and my God!
Happy are those who dwell in your house! They never cease to praise you. Selah
Happy are those who find refuge in you, whose hearts are set on pilgrim roads.
As they pass through the Baca valley, they find spring water to drink. Also from pools the Lord provides water for those who lose their way.
They pass through outer and inner wall and see the God of gods on Zion.
LORD of hosts, hear my prayer; listen, God of Jacob. Selah
O God, look kindly on our shield; look upon the face of your anointed.
Better one day in your courts than a thousand elsewhere. Better the threshold of the house of my God than a home in the tents of the wicked.
For a sun and shield is the LORD God, bestowing all grace and glory. The LORD withholds no good thing from those who walk without reproach.
O LORD of hosts, happy are those who trust in you!
Source: The New American Bible