It was needful that men should be awakened to their danger; that they should be roused to prepare for the solemn events connected with the close of probation. The prophet of God declares: “The day of the Lord is great and very terrible; and who can abide it?” Who shall stand when He appeareth who is “of purer eyes than to behold evil,” and cannot “look on iniquity?” Joel 2:11; Habakkuk 1:13. To them that cry, “My God, we know Thee,” yet have transgressed His covenant, and hastened after another god, hiding iniquity in their hearts, and loving the paths of unrighteousness—to these the day of the Lord is “darkness, and not light, even very dark, and no brightness in it.” Hosea 8:2, 1; Psalm 16:4; Amos 5:20. “It shall come to pass at that time,” saith the Lord, “that I will search Jerusalem with candles, and punish the men that are settled on their lees: that say in their heart, The Lord will not do good, neither will He do evil.” Zephaniah 1:12. “I will punish the world for their evil, and the wicked for their iniquity; and I will cause the arrogancy of the proud to cease, and will lay low the haughtiness of the terrible.” Isaiah 13:11. “Neither their silver nor their gold shall be able to deliver them;” “their goods shall become a booty, and their houses a desolation.” Zephaniah 1:18, 13. (GC 310.1) MC VC

The prophet Jeremiah, looking forward to this fearful time, exclaimed: “I am pained at my very heart.... I cannot hold my peace, because thou hast heard, O my soul, the sound of the trumpet, the alarm of war. Destruction upon destruction is cried.” Jeremiah 4:19, 20. (GC 310.2) MC VC

“That day is a day of wrath, a day of trouble and distress, a day of wasteness and desolation, a day of darkness and gloominess, a day of clouds and thick darkness, a day of the trumpet and alarm.” Zephaniah 1:15, 16. “Behold, the day of the Lord cometh, ... to lay the land desolate: and He shall destroy the sinners thereof out of it.” Isaiah 13:9. (GC 310.3) MC VC

In view of that great day the word of God, in the most solemn and impressive language, calls upon His people to arouse from their spiritual lethargy and to seek His face with repentance and humiliation: “Blow ye the trumpet in Zion, and sound an alarm in My holy mountain: let all the inhabitants of the land tremble: for the day of the Lord cometh, for it is nigh at hand.” “Sanctify a fast, call a solemn assembly: gather the people, sanctify the congregation, assemble the elders, gather the children: ... let the bridegroom go forth of his chamber, and the bride out of her closet. Let the priests, the ministers of the Lord, weep between the porch and the altar.” “Turn ye even to Me with all your heart, and with fasting, and with weeping, and with mourning: and rend your heart, and not your garments, and turn unto the Lord your God: for He is gracious and merciful, slow to anger, and of great kindness.” Joel 2:1, 15-17, 12, 13. (GC 311.1) MC VC

To prepare a people to stand in the day of God, a great work of reform was to be accomplished. God saw that many of His professed people were not building for eternity, and in His mercy He was about to send a message of warning to arouse them from their stupor and lead them to make ready for the coming of the Lord. (GC 311.2) MC VC

This warning is brought to view in Revelation 14. Here is a threefold message represented as proclaimed by heavenly beings and immediately followed by the coming of the Son of man to reap “the harvest of the earth.” The first of these warnings announces the approaching judgment. The prophet beheld an angel flying “in the midst of heaven, having the everlasting gospel to preach unto them that dwell on the earth, and to every nation, and kindred, and tongue, and people, saying with a loud voice, Fear God, and give glory to Him; for the hour of His judgment is come: and worship Him that made heaven, and earth, and the sea, and the fountains of waters.” Revelation 14:6, 7. (GC 311.3) MC VC