A Christian prays to Jesus.
1. A disciple of the Lord = A Christian
Acts 11:26
And when he had found him, he brought him unto Antioch. And it came to pass, that an entire year they assembled themselves with the church, and taught multitudes of people. And the disciples were first called Christians in Antioch.
Acts 9:1
And Saul, yet breathing out threats and murder against the disciples of the Lord, went unto the high priest,
2. Paul wanted to bring these disciples of the Lord/Christians bound to Jerusalem.
Acts 9:2
And desired of him letters to Damascus to the synagogues, that if he found any belonging to the Way, whether they were men or women, he might bring them bound to Jerusalem.
3. A disciple of the Lord/Christian whom Paul wanted to bind is a person who calls on the Name of the Lord Jesus. This means they pray to Jesus.
Acts 9:14
And here he hath authority from the chief priests to bind all who call on Thy Name.