On one occasion, while the crowd was pressing in on him to hear the word of God, he was standing by the lake of Gennesaret, and he saw two boats by the lake, but the fishermen had gone out of them and were washing their nets. Getting into one of the boats, which was Simon’s, he asked him to put out a little from the land. And he sat down and taught the people from the boat. And when he had finished speaking, he said to Simon, “Put out into the deep and let down your nets for a catch.” And Simon answered, “Master, we toiled all night and took nothing! But at your word I will let down the nets.” And when they had done this, they enclosed a large number of fish, and their nets were breaking. They signaled to their partners in the other boat to come and help them. And they came and filled both the boats, so that they began to sink. But when Simon Peter saw it, he fell down at Jesus’ knees, saying, “Depart from me, for I am a sinful man, O Lord.” For he and all who were with him were astonished at the catch of fish that they had taken, and so also were James and John, sons of Zebedee, who were partners with Simon. And Jesus said to Simon, “Do not be afraid; from now on you will be catching men.” And when they had brought their boats to land, they left everything and followed him.
-Luke 5:1-11 (ESV)
He presented himself alive to them after his suffering by many proofs, appearing to them during forty days and speaking about the kingdom of God.
And while staying with them he ordered them not to depart from Jerusalem, but to wait for the promise of the Father, which, he said, “you heard from me; for John baptized with water, but you will be baptized with the Holy Spirit not many days from now.”
So when they had come together, they asked him, “Lord, will you at this time restore the kingdom to Israel?” He said to them, “It is not for you to know times or seasons that the Father has fixed by his own authority. But you will receive power when the Holy Spirit has come upon you, and you will be my witnesses in Jerusalem and in all Judea and Samaria, and to the end of the earth.” And when he had said these things, as they were looking on, he was lifted up, and a cloud took him out of their sight.
-Acts 1:3-9 (ESV)
Now there were in the church at Antioch prophets and teachers, Barnabas, Simeon who was called Niger, Lucius of Cyrene, Manaen a lifelong 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 after fasting and praying they laid their hands on them and sent them off.
So, being sent out by the Holy Spirit, they went down to Seleucia, and from there they sailed to Cyprus.