A  true Christian is when a person recieves Christ as their Savior, and trusting what He did (1 Cor 15:1-4) and accepts the free gift of Salvation which is all part of trusting the Gospel, as shown in 1 Cor 15:1-4. But, you must see yourself lost before you can get saved to be a Christian, knowing that you are guilty of all sins, (Romans 3:19-25) A Christian is not about doing some stupid golden rule, doing good deeds, or being baptized, join a church, clean up and turn over a new leaf, that is NOT what makes a Christian today. The religious system in this world would tell you, YOU have to do things in order to be saved, NONSENSE! Christ said It is finished, and It's by grace! What a wonderful hope we have in Christ in what He did on that cross, but so many, actually, most people want to work their way to God, and many don't believe Christ paid the sin debt for all. What makes a Christian is when you finally get rid of your ego and self, and trust in His grace and His finish work at calvary, hey It's free!