The whole Tribulation period is the wrath of God.
Yep.
Deuteronomy 4:23 Take heed unto yourselves, lest ye forget the covenant of the LORD your God, which he made with you, and make you a graven image, or the likeness of any thing, which the LORD thy God hath forbidden thee. 4:24 For the LORD thy God is a consuming fire, even a jealous God. 4:25 When thou shalt beget children, and children's children, and ye shall have remained long in the land, and shall corrupt yourselves, and make a graven image, or the likeness of any thing, and shall do evil in the sight of the LORD thy God, to provoke him to anger: 4:26 I call heaven and earth to witness against you this day, that ye shall soon utterly perish from off the land whereunto ye go over Jordan to possess it; ye shall not prolong your days upon it, but shall utterly be destroyed. 4:27 And the LORD shall scatter you among the nations, and ye shall be left few in number among the heathen, whither the LORD shall lead you. 4:28 And there ye shall serve gods, the work of men's hands, wood and stone, which neither see, nor hear, nor eat, nor smell. 4:29 But if from thence thou shalt seek the LORD thy God, thou shalt find him, if thou seek him with all thy heart and with all thy soul. 4:30 When thou art in tribulation, and all these things are come upon thee, even in the latter days, if thou turn to the LORD thy God, and shalt be obedient unto his voice; 4:31 (For the LORD thy God is a merciful God; ) he will not forsake thee, neither destroy thee, nor forget the covenant of thy fathers which he sware unto them.
Malachi 3:1 Behold, I will send my messenger, and he shall prepare the way before me: and the LORD, whom ye seek, shall suddenly come to his temple, even the messenger of the covenant, whom ye delight in: behold, he shall come, saith the LORD of hosts. 3:2 But who may abide the day of his coming? and who shall stand when he appeareth? for he is like a refiner's fire, and like fullers' soap: 3:3 And he shall sit as a refiner and purifier of silver: and he shall purify the sons of Levi, and purge them as gold and silver, that they may offer unto the LORD an offering in righteousness. 3:4 Then shall the offering of Judah and Jerusalem be pleasant unto the LORD, as in the days of old, and as in former years. 3:5 And I will come near to you to judgment; and I will be a swift witness against the sorcerers, and against the adulterers, and against false swearers, and against those that oppress the hireling in his wages, the widow, and the fatherless, and that turn aside the stranger from his right, and fear not me, saith the LORD of hosts. 3:6 For I am the LORD, I change not; therefore ye sons of Jacob are not consumed.