The answer to the question of "WHEN is the kingdom of God coming?" is never. If the prophecies about the coming of the kingdom of the god (alleged god) were true, then the kingdom would have arrived well over one thousand years centuries ago.
Where is this promised kingdom of God and the presence of Christ, a kingdom and a presence of a sort which no human could sincerely deny is actual? From the time of our ancestors from 2,500 years ago and even from nearly 2000 years ago until today, humanity throughout the planet Earth has continued to ruled by humans - independently of the (alleged) god.
Furthermore, where is the battle of Armageddon and the Great Tribulation which were foretold nearly 2000 years ago? Also, where is the Day of YHWH/Jehovah God (a great battle by YHWH/Jehovah God) which was foretold about 2500 years ago? A momentous event of a magnitude comparable to the biblical claim of the great worldwide flood of Noah's day was foretold to come, but it has not come. Gospel NT books ("According to Mark", "According to Matthew", and "According to Luke") claim that Jesus said the coming of the Son of Man (Jesus at his alleged return in power and glory) and the end "of the system of things" would be like that of the coming of the flood of Noah's day.
These things show that the expectations stated by the writer of 2 Peter 3 are false. The book called "The Second Of Peter" claims to be written by the Apostle Peter of Jesus Christ, but whether that person wrote it or someone else, the person has been shown to be a false prophet! Modern critical scholars of the NT say that book falsely claims to be written by the Apostle Peter. They also say the book was written around the year 100 CE (see https://en.wikipedia.org/wiki/Second_Epistle_of_Peter ) and in an attempt to explain why Jesus hadn't returned yet and why the end hadn't yet come. We are living about 1900 years after that time and from that vantage point in time it can be seen that the claims of chapter three have proved hollow. The wise (in regards to Bible understanding and how history relates to unfulfilled predictions of the Bible) with eyes to see recognize this.
Christians, please open your figurative eyes! Please 'see' the truth of this matter! Please get out of false religion (namely any religion which teaches supernaturalism) and please adopt scientific naturalism. If you do so you will more accurately perceive reality and be more enlightened and you will be freed from bondage to supernaturalistic thinking, and from bondage to hurtful human rulers of religion.
