Great as in length, not the time of Jacob's trouble that is short and not like any other. Many have been martyred. You don't think their troubles have been great? You may have it easy. Many do not.
The tribulation of "those days" is just general trouble, and not even persecution.
Obviously you don't know what is going on in the rest of the world. The church thrives under tribulation. The church becomes complacent and apostate when there is no tribulation.
False.
Jesus said his followers are persecuted before he comes in the clouds.
This is the tribulation Jesus spoke of.
Mathew 24
9 Then shall they deliver you up to be afflicted, and shall kill you: and ye shall be hated of all nations for my name's sake.
10 And then shall many be offended, and shall betray one another, and shall hate one another.
11 And many false prophets shall rise, and shall deceive many.
12 And because iniquity shall abound, the love of many shall wax cold.
13 But he that shall endure unto the end, the same shall be saved.
14 And this gospel of the kingdom shall be preached in all the world for a witness unto all nations; and then shall the end come.
Mark 13
9 “You must be on your guard. You will be handed over to the local councils and flogged in the synagogues. On account of me you will stand before governors and kings as witnesses to them.
10 And the gospel must first be preached to all nations.
11 Whenever you are arrested and brought to trial, do not worry beforehand about what to say. Just say whatever is given you at the time, for it is not you speaking, but the Holy Spirit.
12 “Brother will betray brother to death, and a father his child. Children will rebel against their parents and have them put to death.
13 Everyone will hate you because of me, but the one who stands firm to the end will be saved.
According to revelation and Daniel ,this persecution lasts 42 months at the hands of the beast.Then the beast and false prophet are destroyed.