If you can capture people's attention you hold great power to move them; to change them; to alter their thinking. You can provoke anger, comfort, hate, love, lies....
Remember the wisdom Peter Parker's Uncle Ben: With great power comes great responsibility.
When you hold someone's ear you have the power to touch their heart, which the Bible tells us to protect (Guard your heart above all else,for it determines the course of your life. Prov. 4:23). It's something we should never take lightly. Words can both heal and kill.
Protect your heart. Protect your mind. Protect your faith. Take nothing (and no one) at face value. Dive deep and seek out truth. No man can create truth as much as we might like to; as much as we hate to be wrong. Truth can be created by none but God. People are fallible. You and I and even Oprah herself. False prophets don't necessarily set out to preach falsely. From a distance truth can look questionable and facts can shift their shapes. How often do we accept strong-minded opinions as facts? How many times have 'facts' become myths? Once upon a time it was a 'fact' that the sun rotated around our flat planet which sat in the center of the universe and if you didn't believe it you could wind up dead for your 'wrong' opinion of a widely known 'fact'.
What it comes down to is that we need to train ourselves to think and not just accept.