The word “disciple” (μαθητής or mathetes, meaning disciple, student) appears 261 times in the Gospels and Acts. The word “Christian” only appears three times, twice in Acts and once in 1 Peter. The very last words that Jesus left us with before ascending back to the Father were these:
Jesus came near and said to them, “All authority has been given to me in heaven and on earth. Go, therefore, and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, teaching them to observe everything I have commanded you. And remember, I am with you always, to the end of the age. Matthew 28:18-20 CSB
The command is “make disciples of all nations” or “disciple all nations” by going, baptizing, and teaching them how to obey or observe Jesus’ teachings and commands. It’s not a hard thing to understand. This is the command, plain and simple. This is our mission, and we are to live on mission.