So far I have presented three arguments for the existence of God:
1) The existence of the universe
2) The evidence of a designer
3) The existence of moral and ethical codes
Former avowed agnostic, C. S. Lewis illustrates the reasoning behind the fourth argument for the existence of God in his classic work "Mere Christianity":
"A man who was merely a man and said the sort of things that Jesus said would not be a great moral teacher. He would either be a lunatic - on a level with a man who says he is a poached egg - or else he would be the Devil of Hell. You must make your choice. Either this man was, and is, the Son of God: or else a madman or something worse."
So, when you contemplate the claims of Christ there are three possibilities:
He was a lunatic
He was a liar
He was the Lord Jesus Christ, God in the flesh, as He declare
One of those three statements has to be absolutely true and the other two incorrect.
Here are some of Jesus' claims:
"Jesus answered, “I am the way and the truth and the life. No one comes to the Father except through me.If you really know me, you will know[b] my Father as well. From now on, you do know him and have seen him.”Philip said, “Lord, show us the Father and that will be enough for us.”Jesus answered: “Don’t you know me, Philip, even after I have been among you such a long time? Anyone who has seen me has seen the Father. How can you say, ‘Show us the Father’? "John 14:6-9
When He was under the pressure of a trial and directly confronted by the Sanhedrin, Jesus boldly proclaimed:
"Then the high priest stood up before them and asked Jesus, “Are you not going to answer? What is this testimony that these men are bringing against you?”But Jesus remained silent and gave no answer.Again the high priest asked him, “Are you the Messiah, the Son of the Blessed One? “I am,”said Jesus.“And you will see the Son of Man sitting at the right hand of the Mighty One and coming on the clouds of heaven.” Mark 14:60-62