In my opinion, the biggest life changing question asked in the Bible can be found in Matthew 16:15, Jesus arrives in the region of Caesarea Philippi. He asked who the people thought He was. The disciples said John the Baptist returned, Elijah, Jeremiah or another prophet. Clearly the people thought whoever this Jesus person was He was under the authority of God. The reality was He was not recognised for who He really was, the Son of God and The Saviour of the World.
Jesus then turns to His disciples and in Matthew 16:15 says, "who do you say I am?" At this point Jesus is recognised as Messiah and Son of the living God and on this foundation Jesus said, "I will build my church". This question at this point changed everything, Jesus' suffering on the cross and His resurrection was close and that God's Kingdom was ever closer.
This question is as powerful today as then. "Who do you say Jesus is?" And that's why I struggle to call myself a Christian, as I learn more about Him. Christian for some people is used to describe someone who loves and follows Jesus. For others it is more a label used to describe a life style, a type of person, a type of music, something ticked on a demographic form or a type of insurance. I remember a musician talking about a particular conference and describing it as very 'Christian'. Almost as you would describe the Motorshow being very automotive. The funny thing is, I went to that very conference the following year and ran into the same chap and I have to say it was very 'Christian'. It's very surreal being sold Christian motor insurance!
The point I'm trying to make is that this word Christian seems so far removed from that moment when Jesus asked that question to His disciples, "who do you say I am?" It's not enough to stick a label on ourselves and call ourselves a Christian, but do we know and acknowledge who Jesus is. He wants to have a 'real' relationship with us and see our lives changed so that we can live life to its fullness.