Never be at a loss when your faith is questioned. Learn about the nature of God and biblical revelations in depth, and be prepared to begin examining other worldviews in light of God’s truth. You can get Understanding the Faith at a 30% discount with free shipping and be equipped to give solid reasons for your beliefs.
There's been a lot of discussion among both Muslims and Christians around this question: Do Muslims and Christians worship the same God? Apologist Alan Shlemon shares his answer in this interview.