And there is a beast.
Jeremiah is a trustworthy speaker, I think you will enjoy him. I like to listen to Perry Stone -- "Watch previous episodes" lists them by topic.
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Throughout history, there will always be strong leaders who oppose Christianity. It is always good to be watchful.
There will also be false prophets, and these are spoken of throughout the Bible.
And there will always be beastly players and systems, that have no conscience when they selfishly wreak havoc.
Horrible things have happened on this earth, and will continue to happen. God wants you to be prepared for each danger you may face, to pray for and assist the people in trouble now.
The revelation John had shows a pivot point in history where troubles accelerate, after which there is some closure. The revelation doesn't just prepare us for that final event, but for troubles and confusing perceptions we might face as we live normal life.
Trusting one man/woman -- whether prophet, politician, business leader, movie star gone altruistic -- always puts us at risk. God wants us to put Him closest in our hearts, and to listen to His whispers about the reliability and intent of any leader.
You can also get some good prophecy information from
Jack VanImpe, but he talks terribly fast.