Has God's wrath already been poured out or is it still in the future?
God's wrath has never yet been poured out. It is still future, reserved for the revelation of God's righteous judgment, when He will render to every man according to his deeds. When it comes, it will be beyond human comprehension, bringing indignation and wrath on those who obey unrighteousness.
Les explains that the one with a hard and impenitent heart treasures up wrath for himself. Les emphasizes that this wrath and the revelation of God's righteous judgment has never yet happened; God has never poured out His wrath. It is still future, but when it comes it will be beyond human comprehension. God will render to every man according to his deeds: glory, honor, and immortality to those who patiently continue in well-doing, but indignation and wrath to the contentious who do not obey the truth but live in unrighteousness. Les also notes there is no respect of persons with God—no difference between nationalities or races—for all are sons of Adam.
But after thy hardness and impenitent heart treasurest up unto thyself wrath against the day of wrath and revelation of the righteous judgment of God;