No one escapes tribulation in a fallen world, but God does promise to get those who know Him as Savior off the scene before He sends judgment.
Some hold that Thessalonians was the first of Paul's writing. Now if that be true why was Paul telling the Ephesians later to (Ephesians 6:11) Put on the whole armour of God, that ye may be able to stand against the wiles of the devil.....-17 if the believers were going to escape tribulation? Doesn't one escape the tribulation if they know what the tribulation is?
12 For we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world, against spiritual wickedness in high places....
Isn't Paul telling us what the tribulation is... Didn't Christ say the first sign of His return was 'deception' of those claiming to be Christ, or Christian?