Asking questions is everyone's most powerful tool, believer or non-believer. We must ask questions. If we sit in the pews, and simply accept everything the guy up there says, we will never really know truth. We may hear it or see it, but it will never really be within us. If we sit in science class, and just accept that nothing condensed into everything randomly exploded and became something, we won't seek out any other possibilities.
These questions can, and should, spread across all sorts of topics. Did Jesus exist? How did the universe start? What is the evidence for evolution? What should the pattern be for marriage? Does God love everyone? When should we be baptized? How does time work?
Now, I'm not saying you should call into question everything a teacher/pastor/leader says. But you should certainly investigate for yourself. The Bible has answers, science has answers, friends have answers, parents have answers, pastors have answers, teachers have answers... Answers come from a variety of places.
But ultimately, they all came from God, just as all truth does.
One important reason we must ask questions about what we believe is so that we are not surprised by them when someone else presents them. If someone asks about the validity of the Scriptures, and you have never asked that yourself, you may lose a chance to defend your faith, or your own faith might be damaged. If someone asks about the Resurrection, and you've never explored the history behind it, you may be at a loss.
The bottom line is that we must stop letting others determine what we believe, whether they are Christian, Atheist, Muslim, or politicians, and we must start thinking for ourselves. God gave us this incredible mind - let's use it to know Him and His truth.
John 16:13 "When the Spirit of truth comes, he will guide you into all the truth, for he will not speak on his own authority, but whatever he hears he will speak, and he will declare to you the things that are to come."
Song of the Day: Wake Up Sleeper by Gungor