This is true, but do not forget - God is infinitely loving - God’s wrath is not a mood he gets into, for Scripture assures us of the principle of Divine Immutability - God, being eternal, does not change and is not mercurial. This is said even of Jesus Christ, our Lord God and Savior, who is like His Father and the Holy Spirit in all respects except relationally and in terms of his having become incarnate as a man, where we are assured that He is the same yesterday, today and tomorrow.
What this means, according to the early church Fathers, but really only the Eastern churches (Eastern Orthodox, Oriental Orthodox and the Assyrian Church of the East and the Ancient Church of the East) teach this in a consistent way, is that the wrath of God is the experience of the consuming fire of God’s love by someone who is opposed to God and hates God and refuses His uncreated grace. That is why the Orthodox Church focuses on preaching the Gospel in a way that promotes repentance and alignment with God, so that we are not burned by the fire of God’s love but rather like the Burning Bush are undamaged by proximity to His presence.
Indeed the Fathers insist that since He is infinitely merciful, the Outer Darkness is a final mercy for those who refuse Him - since being in the luminous presence of God in the New Jerusalem would be an unbearable torment to these people. St. John Chrysostom pointed out that the worst possible punishment would be the realization of what one had excluded oneself from (the bliss of the life of the world to come) through sin.
That is why the church must stress the need for people to repent in this life, lest they are, for their own good, eternally excluded from the life of the world to come and instead wallow in suffering in undying darkness, eaten by the undying worms of the memory of their own sin, consumed by malice and regret and resentment and hatred for God. Because the reality of Hell is far more terrible than the caricature of demons with pitchforks (indeed so too is the reality of demons, who are around us constantly; pneumatic beings, ruled by the Prince of Power of the Air, actively plotting new ways of bringing about our downfall every second of the day.
God have mercy, in the name of Thine only begotten Son Jesus Christ, send down Thy Holy Spirit upon us, and under his direction, conduct all of Thy heavenly host in defense of us against the Evil One, and forgive us our own sins, which are equally repulsive to Thee, but grant us instead through Thy infinite grace a spirit of repentance, love, chastity, obedience, mercy, reverence and charity.