Jesus had many followers and still does but being a follower doesn't mean you're saved or a Christian.
When all pertinent scriptures are considered relative to salvation, you end up with a short list of the requirements to be saved.
1. Belief and faith
2. Confession of your belief as did the Ethiopian eunuch in Acts 8 a sign consistent with Romans 10.9
3. Repentance as dud the Jews on the day of Pentecost in Acts 2:38
4. Baptism, immersion in water, for the remission of sins, also per Acts 2:38
Doing the above you will be saved, will receive the gift of the Holy Ghost, be added to the body of Christ by the Lord which is his church, and be a child of God, a Christian, one that is owned by Christ, paid for by his blood.