Wrath of God is presented in various ways. There is temporal wrath, in the here in now variety. And there is wrath to come, of the pre final judgment variety.
The wrath of God in the here and now, of the temporal variety, is well demonstrated in the O.T. But these demonstrations are not of the "wrath to come" variety. They are pictures however of that wrath to come.
Luke 3:7
Then
said he to the multitude that came forth to be baptized of him, O generation of vipers, who hath warned you to flee from
the wrath to come?
The wrath that God did, and continues to demonsrtate I might add, is in the temporal arena.
Romans 1:18
For
the wrath of God is revealed from heaven against all ungodliness and unrighteousness of men, who hold the truth in unrighteousness;
If we do not see or perceive this kind of wrath we simply are not looking. It is revealed quite openly.
But there is a heightened and horrible wrath that is on the event horizon, ever closer, of course.
Romans 9:22
What if God,
willing to shew his wrath, and
to make his power known,
endured with much longsuffering the vessels of wrath fitted to destruction:
We might say that it is only the longsuffering patience of God Himself that is being demonstrated presently. But that does not preclude wrath in the here and now variety, which can be seen. Some preachers, such as the Westboro baptist variety, sees Gods wrath in the here and now by our soldiers being killed in foreign lands because of homosexuality allowed here, and uses that as a warning to people.
I'm not saying they are afar off in that sight. But this is not the "wrath to come" variety.
The wrath of God is also demonstrated in the here and now, to disobedience of believers:
Ephesians 5:
5 For this ye know, that no whoremonger, nor unclean person, nor covetous man, who is an idolater, hath any inheritance in the kingdom of Christ and of God.
6
Let no man deceive you with vain words: for because of these things cometh the wrath of God upon the children of disobedience.
7 Be not ye therefore partakers with them.
Understanding the wrath to come starts here:
Revelation 6:17
For
the great day of his wrath is come; and who shall be able to stand?
It is also preambled in the O.T. many places, such as here:
Malachi 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 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.
If you are a priest (and king) of Christ, which all as believers are, and that time comes, you WILL be purified. And
that purification will come by wrath.
Rev. 6:
9 After this I beheld, and, lo, a great multitude, which no man could number, of all nations, and kindreds, and people, and tongues, stood before the throne, and before the Lamb, clothed with white robes, and palms in their hands;
13 And one of the elders answered, saying unto me, What are these which are arrayed in white robes? and whence came they?
14 And I said unto him, Sir, thou knowest. And he said to me,
These are they which came out of great tribulation, and have washed their robes, and made them white in the blood of the Lamb.
