What is the Pre-Trib Rapture of the Saints? Also: What Should We Say to the Point of View that We are Presently in the Tribulation Period?

Today on Grace in Focus Radio, Bob and Shawn discuss what the Pre-Trib Rapture of the Saints is. What Scriptures back up this belief? With everything that’s happening right now in our world, how do we know that we’re not already in the midst of the Tribulation? How can we find encouragement in these hard times in which we’re living?