Christians: If we are going through the tribulation?

I have really studied all sides of this with an open mind. Are you familiar with a harvest? There are firstfruits, the main harvest, and then there are the gleanings. Christ was the firstfruits, I feel that serious christians are the main harvest, and the tribulation saints are the gleanings. Also, have you read about the Jewish wedding customs? Also, I feel the 24 elders in the beginning of Revelation are representative of the church, because they sing the song of being redeemed by the blood of Christ. We still must be prepared spiritually, whether we have to go through it or not. I was always told that you should live a spiritual life like it could all end tomorrow, but still plan ahead for your future in this world.