A Christian is a follower of Jesus the Christ! Now for the longer answer...
Today, Jesus stands as the most influential and admired person in human history. Author and historian H.G. Wells said, “I am not a believer, but I must confess that this penniless preacher from Nazareth is irrevocably the very centre of history.”
Most incredibly, Jesus is known and worshipped for his claim to be God, his miraculous healings, life changing teaching and his work of salvation, which he accomplished on the cross. Jesus made claims, performed powerful deeds, taught and saved with authority like no other.
Today, Jesus has over 2 billion followers, yet he didn’t fight wars or rule an empire to get them. He was unjustly crucified as a criminal by the ruling Roman Empire with the approval of his own people Israel. He looked like an abject failure, yet eyewitnesses claimed that Jesus had risen from the dead. His followers rapidly grew until empires and kings bowed the knee to Jesus and confessed him to be King of Kings and Lord of Lords.
Even Napoleon, in a moment of humility, said, “I know men and I tell you that Jesus Christ is no mere man. Between Him and every other person in the world there is no possible term of comparison. Alexander, Caesar, Charlemagne and I have founded empires. But on what did we rest the creation of our genius? Upon force? Jesus Christ founded His empire upon love; and at this hour millions of men would die for Him.”
At the moment of his defeat Jesus was victorious! That is why the cross is the most known symbol on earth. A cruel instrument of capital punishment became the symbol and hope of mankind. Peter, an eyewitness of Jesus, says, “Christ died, the righteous for the unrighteous, that we might be brought home to God” (1 Peter 3:18). This means that on the cross, Jesus the perfect God-man died in our place, as a substitute for our sin and rebellion against each other, this world and God. Jesus did this so that through faith we might be forgiven and reconciled to our Father in Heaven forever. The testimony of history and scripture (eye-witness accounts) also reveals that three days after Jesus’ death, he rose again. This triumphant victory demonstrated his ultimate power over sin, satan and death and the future glory for those who trust in Him. A Christian is one who believes this, confesses that Jesus is indeed Lord of all and rejoices in God’s saving work through Jesus.