Check out the Leshem quotes in “Survival Guide For The End of Days” by Rabbi Pinchas Winston.
Amazon blurb:
Many survival guides for the End-of-Days have been written over the ages, each one with its own approach to its own understanding of what is called, in Biblical terminology, Acharis HaYomim—the End of Days. Though this one has been recently written and addresses current historical events, it is based upon ancient sources, revealed and Kabbalistic, to offer a Jew a clearer understanding of just what the end of history as we know it means, from a Torah perspective, and what to do now to survive it both physically and spiritually. At the very least, this book shows how we know that we are much closer to the “End” than most care to believe.