Nero is the one that most biblical scholars say was the beast of Revelation. And I think the beast is synonymous with the antichrist. There have been many of what can be called small ‘a’ antichrists through history. But, the Church has always taught there is an End Times big ‘A’ Antichrist which, in my opinion, is the one that is called the second beast in the book of Revelation. I think that Nero, the first beast in my opinion, prefigures the End Times Antichrist. This also seems to correspond to how there was even a legend that Nero would return.
“The continuation of this text announces that before the Lord’s arrival there will be apostasy, and one well described as the “man of lawlessness”, “the son of perdition” (2: 3) must be revealed, who tradition would come to call the Antichrist.” - Benedict XVI, General Audience at St. Peter’s Square 12 November 2008
This is the passage from the Holy Bible that Pope Benedict XVI was referencing:
“Now concerning the coming of our Lord Jesus Christ and our assembling to meet him, we beg you, brethren, not to be quickly shaken in mind or excited, either by spirit or by word, or by letter purporting to be from us, to the effect that the day of the Lord has come. Let no one deceive you in any way; for that day will not come, unless the rebellion comes first, and the man of lawlessness is revealed, the son of perdition, who opposes and exalts himself against every so-called god or object of worship, so that he takes his seat in the temple of God, proclaiming himself to be God.” - 2 Thessalonian 2:1-4
“Before Christ’s second coming the Church must pass through a final trial that will shake the faith of many believers. The persecution that accompanies her pilgrimage on earth will unveil the “mystery of iniquity” in the form of a religious deception offering men an apparent solution to their problems at the price of apostasy from the truth. The supreme religious deception is that of the Antichrist, a pseudo-messianism by which man glorifies himself in place of God and of his Messiah come in the flesh.” - CCC, 675
Those who are for so-called same-sex “marriage” claim Nero (their only example in history) as being for this. Nero being the only one in history associated with the abomination of SS’M’ makes him unique. That’s why I believe that so-called same-sex “marriage” is the mark of the beast. And this isn’t only about homosexuals. Since, according to census statistics, homosexuals only make up about 2% or less of the population it actually means that heterosexuals make up the majority of the ones who are pushing for this. I believe that the SS"M" ceremony gives the mark on the hand while heterosexuals can receive the mark on their head by encouraging it.
“Also it causes all, both small and great, both rich and poor, both free and slave, to be marked on the right hand or the forehead, so that no one can buy or sell unless he has the mark, that is, the name of the beast or the number of its name.” - Revelation 13:16-17