Acts of the Apostles 11:21b-26.13:1-3.
In those days a great number who believed turned to the Lord.
The news about them reached the ears of the church in Jerusalem, and they sent Barnabas (to go) to Antioch.
When he arrived and saw the grace of God, he rejoiced and encouraged them all to remain faithful to the Lord in firmness of heart,
for he was a good man, filled with the Holy Spirit and faith. And a large number of people was added to the Lord.
Then he went to Tarsus to look for Saul,
and when he had found him he brought him to Antioch. For a whole year they met with the church and taught a large number of people, and it was in Antioch that the disciples were first called Christians.
Now there were in the church at Antioch prophets and teachers: Barnabas, Symeon who was called Niger, Lucius of Cyrene, Manaen who was a close friend of Herod the tetrarch, and Saul.
While they were worshiping the Lord and fasting, the holy Spirit said, "Set apart for me Barnabas and Saul for the work to which I have called them."
Then, completing their fasting and prayer, they laid hands on them and sent them off.
Sing to the LORD a new song,
for he has done wondrous deeds;
His right hand has won victory for him,
his holy arm.
The LORD has made his salvation known:
in the sight of the nations he has revealed his justice.
He has remembered his kindness and his faithfulness
toward the house of Israel.
All the ends of the earth have seen
Sing joyfully to the LORD, all you lands;
break into song; sing praise.
Sing praise to the LORD with the harp,
with the harp and melodious song.
With trumpets and the sound of the horn
sing joyfully before the King, the LORD.
Holy Gospel of Jesus Christ
according to Saint Matthew 10:7-13.
Jesus said to his Apostles: “As you go, make this proclamation: 'The kingdom of heaven is at hand.'
Cure the sick, raise the dead, cleanse lepers, drive out demons. Without cost you have received; without cost you are to give.
Do not take gold or silver or copper for your belts;
no sack for the journey, or a second tunic, or sandals, or walking stick. The laborer deserves his keep.
Whatever town or village you enter, look for a worthy person in it, and stay there until you leave.
As you enter a house, wish it peace.
If the house is worthy, let your peace come upon it; if not, let your peace return to you."
"Without cost you have received; without cost you are to give"
Now, the Lord Jesus, before freely giving His life for the world, so arranged the Apostles' ministry and promise to send the Holy Spirit that both they and the Spirit might be associated in effecting the work of salvation always and everywhere. Throughout all ages, the Holy Spirit makes the entire Church one in communion and in ministering...
From the very beginning, the Lord Jesus "called to Himself those whom He wished; and He caused twelve of them to be with Him, and to be sent out preaching (Mk 3,13). Thus the Apostles were the first budding-forth of the New Israel, and at the same time the beginning of the sacred hierarchy. Then, when He had by His death and His resurrection completed once for all in Himself the mysteries of our salvation and the renewal of all things, the Lord, having now received all power in heaven and on earth (Mt 28,18), before He was taken up into heaven, founded His Church as the sacrament of salvation and sent His Apostles into all the world just as He Himself had been sent by His Father (Jn 20,21), commanding them: "Go, therefore, and make disciples of a nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit; teaching them to observe all that I have commanded you" (Mt 28,19f.).
Whence the duty that lies on the Church of spreading the faith and the salvation of Christ, not only in virtue of the express command which was inherited from the Apostles by the order of bishops, assisted by the priests, together with the successor of Peter and supreme shepherd of the Church, but also in virtue of that life which flows from Christ into His members... The mission of the Church, therefore, is fulfilled by that activity which makes her, obeying the command of Christ and influenced by the grace and love of the Holy Spirit, fully present to all people and nations, in order that, by the example of her life and by her preaching, by the sacraments and other means of grace, she may lead them to the faith, the freedom and the peace of Christ; that thus there may lie open before them a firm and free road to full participation in the mystery of Christ.