I actually got an email with those two questions in the subject line. The sender was a guy from a Sunday school class I was teaching. He attended with his wife, who was a committed believer, but he was a skeptic. We ended up having a great conversation about the real Gospel, the importance of reading the Bible, etc. (We ended up leaving that church so I’m not sure of his current beliefs. But I trust the process.)
Those are the ultimate softball questions for Christians, right? They recognize that you believe in Jesus, they are interested in the reasons and they want to know how to do it as well. Not all encounters will be that tailor made, but my question is this: Are you ready to give effective answers to those questions? If you aren’t then you need to equip yourselves starting now.
I always start any evangelism / apologetics training with that anecdote. I want people to get away from thinking that evangelism is only about knocking on doors (not that there is anything wrong with that) and pushing through hostile encounters (Jesus gave us the pearls before swine commandment in Matthew 7:6 for a reason). I want people to be prepared, but not to give up before they start.
I highly recommend reading this book and having extra copies to share with people. You will learn how to give an effective presentation of the Gospel, explain the main themes of the Bible and Christianity and address common objections.
P.S. There was an interesting side note with the email. The guy was a trustee of a 3,000 person Methodist church at the time. They didn’t even know he was an explicit non-believer. I knew the church had agnostics in other roles who thought they are Christians, but this guy knew his real spiritual status. Maybe churches should get to know their leaders first, and as a bonus, their members. /sarcasm