Jehoshaphat, from the Hebrew pronounced yeh-haw-shaw-fawt, is a combination of two other Hebrew words, yeh-ho-vaw, from which comes the English Jehovah (see also YHVH, Adonai, Jehovah, LORD) and shaw-fat, meaning to judge. Jeho-shaphat means The Lord judges.
While Jehoshaphat is found a number of times in Bible History as the name of four or five people, ranging from a king of Judah (1 Kings 15:24, see also Kings of Israel and Judah) to a recorder for King David (2 Samuel 8:16), Jehoshaphat is moreover a valley that is mentioned specifically by that name only twice in the Bible, in Prophecy, in the third chapter of Joel, as the place of The Lord's end-time wrath and judgment upon the enemies of truth, justice, and God's Way.
"3:1 For, behold, in those days, and in that time, when I shall bring again the captivity of Judah and Jerusalem, 3:2 I will also gather all nations, and will bring them down into the valley of Jehoshaphat, and will plead with them there for my people and for my heritage Israel, whom they have scattered among the nations, and parted my land." (Joel 3:1-2 KJV)
"I will also gather all nations, and will bring them down into the valley of Jehoshaphat"
"Valley of Jehoshaphat" came to be used for the valley between the city of Jerusalem and The Mount Of Olives (shown in the photo). That hill will be "ground zero" for The Return Of Jesus Christ (see also Sodom and Egypt).
"3:11 Assemble yourselves, and come, all ye heathen, and gather yourselves together round about: thither cause thy mighty ones to come down, O LORD. 3:12 Let the heathen be wakened, and come up to the valley of Jehoshaphat: for there will I sit to judge all the heathen round about. 3:13 Put ye in the sickle, for the harvest is ripe: come, get you down; for the press is full, the vats overflow; for their wickedness is great. 3:14 Multitudes, multitudes in the valley of decision: for the day of the LORD is near in the valley of decision.
Numerous other Scriptures describe the same one-time-only events and "signs in the heavens" that are also described in references to the Valley of Jehoshaphat in Joel e.g.
"14:1 Behold, the day of the LORD cometh, and thy spoil shall be divided in the midst of thee. 14:2 For I will gather all nations against Jerusalem to battle; and the city shall be taken, and the houses rifled, and the women ravished; and half of the city shall go forth into captivity, and the residue of the people shall not be cut off from the city.
Fact Finder: (a) Why didn't Christ come with the power that He will have at His return? (b) How will Christ transform the earth's kingdoms of men into the Kingdom of God?