The Holy Bible, Matthew 24:6-7
6 And ye shall hear of wars and rumours of wars: see that ye be not troubled: for all these things must come to pass, but the end is not yet.
7 For nation shall rise against nation, and kingdom against kingdom: and there shall be famines, and pestilences, and earthquakes, in divers places.
The Book of Mormon, 1 Nephi 14:15
15 And it came to pass that I beheld that the wrath of God was poured out upon that great and abominable church, insomuch that there were wars and rumors of wars among all the nations and kindreds of the earth.
The Doctrine and Covenants, Section 45:26
26 And in that day shall be heard of wars and rumors of wars, and the whole earth shall be in commotion, and men’s hearts shall fail them, and they shall say that Christ delayeth his coming until the end of the earth.
The Doctrine and Covenants, Section 45:63
63 Ye hear of wars in foreign lands; but, behold, I say unto you, they are nigh, even at your doors, and not many years hence ye shall hear of wars in your own lands.
The Pearl of Great Price, Joseph Smith—Matthew 1:23
23 Behold, I speak these things unto you for the elect’s sake; and you also shall hear of wars, and rumors of wars; see that ye be not troubled, for all I have told you must come to pass; but the end is not yet.
The Pearl of Great Price, Joseph Smith—Matthew 1:28-29
28 And they shall hear of wars, and rumors of wars.
29 Behold I speak for mine elect’s sake; for nation shall rise against nation, and kingdom against kingdom; there shall be famines, and pestilences, and earthquakes, in divers places.
The Guide to the Scriptures: Rumor
One of the signs of the second coming of Jesus Christ is that people will talk of wars and rumors of wars.