Bible believing Christians argue that there are two raptures, one for the Christian church before the tribulation,
and one for Tribulation Saints during the tribulation.

Please watch Amazing Dispensationalism from Genesis to Revelation by Gene Kim to understand it better.

People will say that doesn’t make sense.

However, there are verses that definitely prove it.

In Ephesians 5:31-32, the Christian church is the bride of Jesus Christ.

The bride of Jesus Christ, the church, is not down on Earth during the tribulation because they’re already married to Christ up in heaven.

The evidence is Luke 12:36. Notice that when God comes to rapture the Tribulation Saints during the tribulation, He already married His bride, the church up in heaven.

So, the church is not ever in the earth during the tribulation. They were already married to Christ up in heaven long before.