Read 1 Thessalonians 5:2, 3.

However, just before that day of Jehovah begins, world leaders will be saying “Peace and security!” This may refer to one event or to a series of events. Nations may think that they are close to solving some of their big problems. What about the religious leaders? They are part of the world, so it is possible that they will join the political leaders. (Rev. 17:1, 2) The clergy would thus be imitating the false prophets of ancient Judah. Jehovah said about them: “They [are] saying, ‘There is peace! There is peace!’ when there is no peace.”​—Jer. 6:14; 23:16, 17.

 4. Unlike mankind in general, what do we discern?

⁴ No matter who will share in saying “Peace and security!” that development will indicate that Jehovah’s day is to begin. Paul could therefore state: “Brothers, you are not in darkness, so that that day should overtake you as it would thieves, for you are all sons of light.” (1 Thess. 5:4, 5) Unlike mankind in general, we discern the Scriptural significance of current events. How exactly will this prophecy about saying “Peace and security!” be fulfilled? We must wait and see. Therefore, let us be determined to “stay awake and keep our senses.”​—1 Thess. 5:6; Zeph. 3:8.

 5. (a) How will the “great tribulation” start? (b) What “queen” will miscalculate her chances of survival?

⁵ What yet unseen event will take place next? Paul stated: “Whenever it is that they are saying: ‘Peace and security!’ then sudden destruction is to be instantly upon them.” The first phase of this “sudden destruction” is the attack against “Babylon the Great,” the world empire of false religion, also known as “the harlot.” (Rev. 17:5, 6, 15)