Sun and moon are not darkened until the desolation. Then the dead in Christ are raised and those that are alive and remain will join Christ in the clouds. This timeline is mentioned over and over again. The key factor is that the beast delares war on the saints and overcomes them but for the sake of saving g some flesh, Christ shortens those days. This is at the halfway point of the great trib. Or 3.5 years in. Nothing in scripture says that the church will escape the persecution of Satan. It does say that we will be taken up before God unloads the vials of wrath. It’s repeated over and over and over again in old and new testaments.