Jesus said the end times would be a time of "great tribulation like never before". He did not call it God's wrath.
Since all of Scripture is inspired by God's Spirit, Paul calls it God's wrath. Col 3:6, 1Th 1:10, 1Th 5:9, Rev 6:17 etc.
In the OT we see the expression Day of the Lord equating with God's wrath...
Isaiah 13:6 (KJV) Howl ye; for the day of the LORD
is at hand; it shall come as a destruction from the Almighty.
Isaiah 13:9 (KJV) Behold, the day of the LORD cometh, cruel both with wrath and fierce anger, to lay the land desolate: and he shall destroy the sinners thereof out of it.
Isaiah 34:8 (KJV) For
it is the day of the LORD'S vengeance,
and the year of recompences for the controversy of Zion.
Jeremiah 46:10 (KJV) For this
is the day of the Lord GOD of hosts, a day of vengeance, that he may avenge him of his adversaries: and the sword shall devour, and it shall be satiate and made drunk with their blood: for the Lord GOD of hosts hath a sacrifice in the north country by the river Euphrates.
Lamentations 2:22 (KJV) Thou hast called as in a solemn day my terrors round about, so that in the day of the LORD'S anger none escaped nor remained: those that I have swaddled and brought up hath mine enemy consumed.
Ezekiel 13:5 (KJV) Ye have not gone up into the gaps, neither made up the hedge for the house of Israel to stand in the battle in the day of the LORD.
Ezekiel 30:3 (KJV) For the day
is near, even the day of the LORD
is near, a cloudy day; it shall be the time of the heathen.
Joel 1:15 (KJV) Alas for the day! for the day of the LORD
is at hand, and as a destruction from the Almighty shall it come.
Joel 2:1 (KJV) 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;
Joel 2:11 (KJV) And the LORD shall utter his voice before his army: for his camp
is very great: for
he is strong that executeth his word: for the day of the LORD
is great and very terrible; and who can abide it?
Joel 2:31 (KJV) The sun shall be turned into darkness, and the moon into blood, before the great and the terrible day of the LORD come.
Joel 3:14 (KJV) Multitudes, multitudes in the valley of decision: for the day of the LORD
is near in the valley of decision.
Amos 5:18 (KJV) Woe unto you that desire the day of the LORD! to what end
is it for you? the day of the LORD
is darkness, and not light.
Amos 5:20 (KJV) Shall not the day of the LORD
be darkness, and not light? even very dark, and no brightness in it?
Obadiah 15 (KJV) For the day of the LORD
is near upon all the heathen: as thou hast done, it shall be done unto thee: thy reward shall return upon thine own head.
Zephaniah 1:14 (KJV) The great day of the LORD
is near,
it is near, and hasteth greatly,
even the voice of the day of the LORD: the mighty man shall cry there bitterly.
Zephaniah 1:18 (KJV) Neither their silver nor their gold shall be able to deliver them in the day of the LORD'S wrath; but the whole land shall be devoured by the fire of his jealousy: for he shall make even a speedy riddance of all them that dwell in the land.
Zephaniah 2:2 (KJV) Before the decree bring forth,
before the day pass as the chaff, before the fierce anger of the LORD come upon you, before the day of the LORD'S anger come upon you.
Zephaniah 2:3 (KJV) Seek ye the LORD, all ye meek of the earth, which have wrought his judgment; seek righteousness, seek meekness: it may be ye shall be hid in the day of the LORD'S anger.
Zechariah 14:1 (KJV) Behold, the day of the LORD cometh, and thy spoil shall be divided in the midst of thee.
Malachi 4:5 (KJV) Behold, I will send you Elijah the prophet before the coming of the great and dreadful day of the LORD:
Are you really going to redefine the above verses as 'tribulation?
That is what Scripture states.