Hello there, @HelloThere!
The reference you have quoted ARE in Scripture. They’re just a little out of order, and you are interpreting them by your earlier teachings.
1Thessalonians 5:2 For yourselves know perfectly that the day of the Lord so cometh as a thief in the night.
1Thessalonnians 5:3 For when they shall say, Peace and safety; then sudden destruction cometh upon them, as travail upon a woman with child; and they shall not escape.
There’s a lot more
here that might clarify.
So anyhow, Paul spoke of “security.” Jesus spoke of Noah’s time:
Matthew 24:37-39
King James Version
37 But as the days of Noah were, so shall also the coming of the Son of man be.
38 For as in the days that were before the flood they were eating and drinking, marrying and giving in marriage, until the day that Noe entered into the ark,
39 And knew not until the flood came, and took them all away; so shall also the coming of the Son of man be.
Read full chapter
My guess — and I freely admit it is a Guess – is that in Noah’s day the rich and powerful felt security, and were partying. But the odds are that they were rich and powerful because they harmed others. There would be much poverty, strife and rage. (If the victims were good people, they would have gone into the Ark, but they weren’t, so they didn’t.) So probably it will look much the same as the end of the age draws near: the powerful feel secure, but there would be much hate and suffering in the world.
But you say you are worried about signs in the skies. Dear one, don’t be.
Remember that earth-shattering blast, fire, and tsunami in the film DEEP IMPACT? That’s nothing compared to Christ’s return.
Remember that talk about supernovas exploding? (Betelgeuse is the closest active candidate, if and when.) That’s nothing compared to Christ’s return.
Remember when the Death Star blew up Alderaan, and Luke Skywalker then blew up the Death Star? That’s nothing compared to Christ’s return.
Yes, there will be weird things in our earth and sky on a fairly regular basis. It’s because we live in a weird world. (Well, a fallen world, but that word can siphon the hope out of it.)
But when Christ returns, we will know it. People who don’t believe in Him will know it. People who never heard of Him will know it. The dead in their graves will know it. And those who love Christ will be so overjoyed to see Him that we will forget to be afraid anymore.
Dear one, I grew up with Rapture/Dispensation teachings too. It’s scary to be taught them. It’s scary to question them. And it’s scary to ask for help in having the Word of God expounded more perfectly, so that you will know the truth, and the truth will set you free.
Yes, this world can be a little scary right now. Fortunately, you are not alone. Never alone. God loves you. Be right with Christ’s First Coming, and the Second Coming will take care of itself.