'Follower' in the Bible

Summoning the crowd along with His disciples, He said to them, “If anyone wants to be My follower, he must deny himself, take up his cross, and follow Me.

John told Jesus, "Teacher, we saw someone driving out demons in your name. We tried to stop him, because he wasn't a follower like us."

Then Jesus looked at him and loved him, and said, "One thing is lacking in you: go, sell all you possess and give the proceeds to the poor, and you shall have riches in Heaven; and come and be a follower of mine."