For anyone who is worried that they will go through the Great Tribulation, compare Revelation 3:6 and Revelation 13:9.

Revelation 3:6 specifically mentions the Holy Spirit directly communicating to those in groups of people. This is redeemed people only, since only they have the Holy Spirit indwelling them 24/7/365.\

Revelation 13:9 only refers to anyone who can hear, no mention of any Holy Spirit indwelling, because this is a different dispensation. Grace is over and Law has returned, therefore the Holy Spirit has been functioning according to the new dispensation, similar to the one of Law, before Pentecost.

Therefore, any person who has the Holy Spirit living inside of them now is redeemed, and will not go through the Great Tribulation. The people who do go through The Great Tribulation from now are those who do not have the Holy Spirit living inside of them, but they pretend or are deceived that they do. There is no other definition of redemption right now, and this is explained in great detail in 1, 2 and 3 John.