The disciples were called Christians first at Antioch.
Acts 11:26c

¹⁸ Then Jesus came to them and said, “All authority in heaven and on earth has been given to me. ¹⁹ Therefore go and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, ²⁰ and teaching them to obey everything I have commanded you. And surely I am with you always, to the very end of the age.”
Matthew 28:18-20

So the word of God spread. The number of disciples in Jerusalem increased rapidly, and a large number of priests became obedient to the faith.
Acts 6:7

They preached the gospel in that city and won a large number of disciples.
Acts 14:21a

¹⁴ For Christ’s love compels us, because we are convinced that one died for all, and therefore all died. ¹⁵ And he died for all, that those who live should no longer live for themselves but for him who died for them and was raised again. ¹⁶ So from now on we regard no one from a worldly point of view. Though we once regarded Christ in this way, we do so no longer. ¹⁷ Therefore, if anyone is in Christ, the new creation has come: The old has gone, the new is here! ¹⁸ All this is from God, who reconciled us to himself through Christ and gave us the ministry of reconciliation: ¹⁹ that God was reconciling the world to himself in Christ, not counting people’s sins against them. And he has committed to us the message of reconciliation. ²⁰ We are therefore Christ’s ambassadors, as though God were making his appeal through us. We implore you on Christ’s behalf: Be reconciled to God. ²¹ God made him who had no sin to be sin for us, so that in him we might become the righteousness of God.
2 Corinthians 5:14-21

What is a disciple?

• We have a new

. (vs 17)

And I am certain that God, who began the good work within you, will continue his work until it is finally finished on the day when Christ Jesus returns.
Philippians 1:6

• We live for a new

. (vs 15)

• We see through a new

. (vs 16)

• We

Christ to the world. (vs 20)

³⁴ “And so I am giving a new commandment to you now—love each other just as much as I love you. ³⁵ Your strong love for each other will prove to the world that you are my disciples.”
John 13:34,35