4. Moral Evidence
Without God, morality would be impossible. There must be a Lawgiver (God) who developed and stands by moral law. A universal moral law cannot exist accidentally. A basis —namely God—must be behind it.
In my opinion, the moral argument for God is the strongest. There’s no getting around morality without God. Moral absolutes must define what is good and bad. When morality is relative, then anything can be considered justifiably good.
5. Personal Evidence
Simply talk about how Jesus changed your life. No one can argue with your experiences. Make God real as you talk about how he touched and impacted your life. I’ve never seen someone debate whether or not God actually redeemed someone. So just talk about why Jesus is King of your life.
Resources for Researching Theological Questions
Standtoreason.org — Greg Koukl trains Christians to think more clearly about their faith. He helps them make an even-handed, incisive, yet gracious defense for Christianity and biblical values.
Reasonstobelieve.org — Hugh Ross, founder and president, wrote the amazing book Why the Universe Is the Way It Is
I also recommend Tim Keller’s book The Reason for God
