Jacob's time of trouble

For thus saith the LORD; We have heard a voice of trembling, of fear, and not of peace. Alas! for that day is great, so that none is like it: it is even the time of Jacob's trouble; but he shall be saved out of it.
Jeremiah 30:5,7
"Jacobs experience during that night of wrestling an anguish represents the trial through which the people of God must pass just before Christ's second coming."
Patriarchs & Prophets p.201 E.G.W.