What is a Christian?

A Christian according to the Bible is someone who answers the call of God the Father has been born from above through the Holy Spirit by God’s grace alone; through faith alone; in the historic Person Jesus Christ of Nazareth–Gods son–Who died for his sins. The book of Romans chapters 5 and 8 explain this in great detail.

Am I a Christian?

"Examine yourselves to see whether you are in the faith; test yourselves. Do  you not realize that Christ Jesus is in you - unless, of course, you fail the test?"

2 Corinthians 13:5