The WTBTS/"faithful slave" have been promising/warning Bible Students & JW's for over 100 years that the great tribulation of Matthew 24 was imminent. This fear-factor is also used annually to "motivate" inactive JW's into attending the Memorial.
Does the Bible teach that the tribulations of Matthew 24:21 & Revelation 7:14 are one and the same?
The great tribulation spoken of at Revelation 7:14 cannot be the same one Jesus spoke of at Matthew 24:21 - for two reasons:
a) The great tribulation at Revelation 7:14 is a reference to the same great tribulation mentioned five chapters previously by the angel at Revelation 2:22.
This tribulation would be instigated by Christ himself - against those who were corrupting the congregations. The angel was describing a distinctly different tribulation in Revelation, one which was future - not one which had already occurred almost 30 years previously.
b) At Matthew 24:21, Jesus said "....no, nor will occur again".
Can something which Jesus said would never be repeated, have another fulfilment?
It is nonsensical to insist that different scriptures are discussing the same topic simply because they contain similar expressions.
Example: Acts 7:11 speaks of a "great tribulation," but even JW's would see that the surrounding verses and context eliminate any connection to Matthew 24:21.
JW's - Use the same logic & reasoning when trying to connect Matthew 24:21 with Revelation 2:22 & 7:14.
They don't & cannot connect - because they are entirely different scenarios.
Use the scriptures to readjust your thoughts & fears regarding the org's "impending" great tribulation.