-Because this world is designed, and design needs a designer ("The heavens declare the glory of God and the firmament showeth His handiwork" Psalm 19:1). -His Holy Word, The Bible, was written over a very long period, most of the authors were not contemporaries of one another or got to speak to one another, but the Bible is still without contradiction. It has to be inspried by God. (All scripture is given by inspiration of God..." 2 Timothy 3:15). -The Ressurection of Jesus Christ which was witnessed by many . -The fact that I speak to HIm every day.