Though Jesus’ coming will be preceded by many signs, His coming will be sudden and unexpected, especially by those who are unbelieving and mockers.
Jesus has given us many signs of His coming (Matt. 24:3-14). When Jesus was asked by His disciples, “What will be the sign of Your coming, and the end of the age,” He gave them these eight signs: (1) false Christ’s and prophets will come and mislead many; (2) they will hear of wars and rumors of wars; (3) nations will rise against nations; (4) there will be famines and earthquakes in various places; (5) all believers (especially Jewish believers) will be hated, persecuted, and killed; (6) many weak believers will fall away and will betray one another; (7) rebellion and lawlessness will increase; and (8) the gospel will continue to be preached to the whole world right up to the end—when He comes.
His coming will be unexpected and a great surprise to all unbelievers (Matt. 24:37-51; 25:44; Lu. 17:26-30; 1 Thess. 5:3). The bible tells us that He will come suddenly, like birth pangs upon a pregnant woman; and He will come unexpectedly, like a thief in the night. Thus he will come on a day when people will be quite unprepared for Him, just as those in Noah’s day were unprepared for the flood—even though Noah had been warning them through his preaching (2 Pt. 2:5).
Thus in that day many will be going about their normal, daily business, when suddenly, and surprisingly, He will appear in the sky. And they will be even more surprised to discover that He will not accept them into His kingdom and that He will say to them, “Depart from Me, accursed ones.” They will not understand God’s judgment on them, for they will be so blinded in their evil ways that they will not know the truth when they see it. Indeed, they will be totally unprepared for His coming! Many will point to all their good works. Others will probably say that they thought the idea of His coming was just fairy tales and foolishness.
His coming will be preceded by mocking (2 Pt. 3:3-4; Jude 18). In the last days, especially during the Tribulation, people will be extremely worldly and lustful—looking out for only themselves. And they will have nothing good to say to anyone who is a believer. Indeed, they will curse God for their suffering (Rev. 16:9, 11, 21), and they will mock all believers who insist that He is coming soon. But unknowingly, they will be providing believers with great hope; for their mocking is a definite sign of His coming.