1) What is it? 2) Why do we need to know it? 3) Why have the popes concealed it?
Let’s start with the last one: they have concealed it, to protect their complicity. It was their responsibility to fulfil Our Lady’s request for the consecration of Russia to her Immaculate Heart, but by failing, they have predisposed the very attack that is foretold. And ‘why do we need to know it?’ Because it will avail our salvation in a time of persecution, affecting the whole world,
For in fact.. the Third Secret is about the coming of Antichrist. As I explain below, his first target – is the Mass of the Catholic Church. By assuming the role of a Christian minister he will gain access to a celebration of the Mass, in order to abolish it. Then having displaced Christ from the altar, he will set up an idol there, which will enable Satan to display visual prodigies, in order to mislead us into accepting him as god. (All this is conforms to the Scriptural prophecies on the last days such as in Matt 24). At the same time, a powerful nation will attack the whole world, forcing all to worship the idol on pain of death: hence the designation of the idol: ‘the abomination of desolation’.
It was evidently God’s will that we should avoid this time of trial, for when Our Lady appeared at Fatima, to warn that Russia would provoke attacks on the Church, the remedy against this was also offered in the form of the consecration of Russia. But as stated above, it was not fulfilled, and so Russia’s attacks have continued until the point revealed in Scripture, when it will provoke an attack on all Christians.
There is a mystery about why God asked for the consecration to be made in 1929. On 13th June that year, Our Lady re-appeared to Lucy and announced ‘the moment has come when God asks the Pope in union with all the bishops of the world, to consecrate Russia to my Immaculate Heart – promising to convert it by this means’. As it has not been made it implies that this moment was the inception of events leading to the Third Secret. In my work I follow those events towards the point when ‘the snake will strike at the woman’, then in a fulfilment of what God promised in Genesis 3:15, the consecration to her Immaculate Heart will reveal the conclusive triumph of Christ. It is a failure of those claiming to have expertise on Fatima, to draw these conclusions. But surely we must accept the above as providential helps to salvation? Satan tries to conceal his strategy – but God has revealed it, so that by rejecting Antichrist when he comes, we holding firm to the faith under persecution, and so save our eternal souls.