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Excellent analogy my friend, I love this one as well. Because all wrath was pouring out on Egypt with Israel in the middle of it (so to speak) and Yah kept them safe and it didn't touch them. It's so funny how hard people want to hang on to the pre-trib rapture lie, because they just can't bare the thought of having to be here in the tribulation. Shalom
Not every type and shadow in the Bible is verbatim. The passover lamb never came back to life, yet it is still a clear foreshadow of Jesus. Similarly, The Lord's people being "hid" during a time of God's wrath is a picture of the rapture. The Israelites were told to stay behind their doors and not come out during the first passover.
This is just a prophetic type of believers being in the "chamber" being protected until God's judgment has passed over the unbelieving world. In other words, they are never harmed. They are "kept." This is precisely why the rapture happens just before the start of the Day of The Lord.
19Thy dead men shall live, together with my dead body shall they arise. Awake and sing, ye that dwell in dust: for thy dew is as the dew of herbs, and the earth shall cast out the dead. 20Come, my people, enter thou into thy chambers, and shut thy doors about thee: hide thyself as it were for a little moment, until the indignation be overpast.
21For, behold, the LORD cometh out of his place to punish the inhabitants of the earth for their iniquity: the earth also shall disclose her blood, and shall no more cover her slain.
The post-trib model tries to have it both ways. You cannot say believers are protected and yet are killed by the Antichrist. It doesn't make any sense.
I also think it is pointless to say those who believe the "pre-trib lie" are somehow scared. Do we really need to go there? C'mon man.