This verse makes me laugh. "Consider the outcome of their way of life" - sounds a LOT like judging to me. But, yesterday we were staying at the crossroads trying to decide where to go- if we do not consider their way of life and start running down a deadened road- well then we are going no where fast.
Leaders take this as the challenge that it is. Do not be so bold as to speak God's Word and not live in it's fullness. People are watching you. Imitating you. Do not cause them to stumble.