I recommend the teachings by pastor Teku Kebede. He has provided 31 episodes of teachings by u tube on the topic. He has devoted 44 years to study on the book of revelation. Even the book of revelation is structured as such. The rapture of the church of Jesus Christ of Nazareth is to recue believers from the coming great tribulation, which is the 70th ' Subae' prophesized by Daniel. Be cautious on your teachings here as you may be a reason for the deceit of many. God bless you for your services of the gospel of opur lord Jesus Christ of Nazareth. In the love of Christ!