“The Law of Noncontradiction is a self-evident first principle of thought that says contradictory claims cannot both be true at the same time in the same sense. In short, it says that the opposite of true is false. We all know this law intuitively, and use it every day.
Suppose you see a married couple on the street one day—friends of yours—and you ask the wife if it’s true that she’s expecting a baby. If she says “yes” and her husband says “no,” you don’t say, “Thanks a lot, that really helps me!” You think, “Maybe she hasn’t told him, or maybe they misunderstood the question (or maybe something worse!).” There’s one thing you know for sure: they can’t both be right! The Law of Noncontradiction makes that self-evident to you.
When investigating any question of fact, including the question of God, the same Law of Noncontradiction applies. Either the theists are right—God exists—or the atheists are right—God doesn’t exist. Both can’t be correct. Likewise, either Jesus died and rose from the dead as the Bible claims, or he did not as the Qur’an claims. One is right, and the other is wrong.”
Excerpt from the book by Norm Geisler and Frank Turek; I Don’t Have Enough Faith to Be an Atheist