"Just as in Revelation 14:8 we read, in connection with Mystery Babylon, of "the wrath of her fornication," the Greek word for "wrath" here, as mentioned previously, is thumos meaning, according to Strong’s Concordance, "breathing hard, passion." That certainly sheds light upon the expression "the wrath of her fornication," for there is no "wrath" suggested in the act of fornication. A man and woman who are having a fling, or a prostitute who has been paid for her services, do not engage in wrath — rage, violence, revenge, vengeance, punishment — while they are fornicating! Oh, no! But they certainly are in the fever heat of passion! Thus, the passage should read, "…she made all nations to drink of the passion of her fornication" rather than "the wrath of her fornication." This fact alone should settle once and for all the real meaning of the Greek word thumos. So it is clear that God’s "wrath." as revealed in the book of Revelation, has to do with His passion, or feeling very strongly about something. It is illuminating that in Revelation 14:10 we find that God’s disobedient children, who ignore the wooing of His Spirit and resist His hand of dealing, are made to drink "the wine of the passion of God." Anyone knows that wine inflames the passions, but does not generally invoke wrath. Can we not see by this that God’s wrath or passion is not that which is vindictive and vengeful, but rather that which is impassioned, fervent, zealous, enlivened, glowing, vigorous, intense, burning, determined, and dynamic!"
Much more in the link:
"The following illustration will make this clear. It is frequently said in the Old Testament that Yahweh is angry. Yet Jesus came as the revelation of our Father, Yahweh, and He said that "God (Yahweh) so loved the world, that He gave His only begotten Son." The beloved John states that as to His nature, "God IS love." Does not love appear to be far above anger and wrath? This may be compared to a wise father out of love telling his children that he is very angry on account of something bad that they have done. It is obvious in this case that the word "angry" stands for the sternness issuing out of the father’s love of his children and his intense and determined hope of their improvement, and is the outward expression of his love. He may even take strong measures to show them his displeasure and how fervently he requires their repentance and change of behavior. Can we not see by this that whatever he does to correct his children is not done out of uncontrolled rage, unbridled vengeance, nor as vindictive punishment — rather his actions are the expression of meaningful correction out of love. And that, my friend, is what is meant by the "wrath" of God! It is His divine, determined passion to make right what is wrong in the lives of His immature, irresponsible, or rebellious children. Aren’t you glad!"