Yes, Jesus taught that all believers would suffer trials and tribulations for His sake. But then also, in Matthew 24:21, He spoke:
For then shall be great tribulation, such as was not since the beginning of the world to this time, no, nor ever shall be.
This is clearly a *very* specific period of unprecedented world tribulation. As Jesus was speaking in future tense, we know this period would follow His time on earth. The only question is, has this period occurred already, or is it still yet to come?
I’m comfortable believing this period of terrible Tribulation occurred with the destruction of Jerusalem in 70 AD.