How can we know details of the "season" of when the "end" will come, such as "Who ? What ? Where ? How ?" ? This requires grasping intimately concerning God's Kingdom, so that it can be understood when it came to power and what would follow and how close we are to the "the end".
This necessitates that we "get the sense" (Jesus used the Greek word syniemi, rendered as "get the sense" that literally means to "mentally put the pieces together" at Matthew 13 some 6 times concerning God's Kingdom) of God's "sacred secrets of the Kingdom".(Matt 13:11, "mysteries of the kingdom", KJV)
Proverbs 25:2 says: "It is the glory of God to keep a matter secret, and the glory of kings is to search through a matter." Thus, our Maker, Jehovah God, has kept matters secret concerning the Kingdom, from the masses of mankind, those not worthy, including the churches of Christendom. However, "the glory of kings is to search through a matter" that God has hidden to most. This begs the question, Who are the kings spoken of at Proverbs 25, that can "search through a matter" of God ?
Jesus said in prayer to the Father, Jehovah: "I publicly praise you, Father, Lord of heaven and earth, because you have hidden these things from the wise and intellectual ones and have revealed them to young children."(Matt 11:25) Those with high academic skills, such as a university or college education from a seminary, are not the ones whom God selects to grasp details of the Kingdom, but rather this has been "revealed.....to young children", those who display child-like humility, allowing themselves to be "taught by Jehovah".(John 6:45; Isa 54:13)
Among these humble ones are those chosen for the "heavenly calling" (Heb 3:1) who will also concurrently serve as priests when reaching heaven after their resurrection.(Rev 1:6; these ones are anointed with God's holy spirit, being "sealed ....with the promised holy spirit, which is a token in advance of our inheritance", Eph 1:13, 14)
The apostle Paul wrote of such ones, that "a man should regard us as attendants of Christ and stewards of God’s sacred secrets."(1 Cor 4:1) These are privileged with gaining an understanding of the "sacred secrets " of God's Kingdom and revealing it to others. Paul says to some who were "puffed up with pride": "Are you already satisfied ? Are you already rich ? Have you begun ruling as kings without us ? I really wish that you had begun ruling as kings, so that we also might rule with you as kings."(1 Cor 4:6, 8)
Hence, Paul noted that becoming kings of God's Kingdom would be a reality for some (Rev 7:4 and 14:1 reveals that 144,000 are chosen from the earth to serve in the official positions of "kings and priests" or as "firstfruits", receiving "adoption as sons", Rom 8:15) and would be able to unveil "God's sacred secrets" concerning this heavenly government, such as when it became operational, who and how many are selected to be a "kingdom and priests to his God and Father."(Rev 1:6) This, in turn, will help us to grasp the closeness of "the end".
Here are some more of the details of the Kingdom, such as when it became operational. At Revelation 6, there is seen a rider on "a white horse" who has a "bow" and "a crown is given him." He then goes forth "conquering and to complete his conquest."(Rev 6:2) Who is this rider on "a white horse" ? Jesus Christ, for Revelation 19:11-13 identifies him as such.
But upon Jesus receiving "a crown" or becoming king of God's Kingdom (see Dan 7:13, 14 showing Jesus as "a son of man" being "given rulership, honor and a kingdom"), what quickly happens ? A rider on a "fiery-colored horse" appears that is "granted.....to take peace away from the earth so that they should slaughter one another and he (the rider) was given a great sword."(Rev 6:4) Why ?
Because of another war that took place unseen to human eyes, a war between Michael (or Jesus) and his army of angels and Satan and his angels. This resulted in Satan and his angels being cast down to the earth and confined to it (Rev 12:7-9), causing "woe for the earth and for the sea (or restless masses of mankind, Isa 17:12), because the Devil (has) great anger, knowing he has a short period of time".(Rev 12:12)
Is the ride of the "fiery-colored horse" that takes "peace away from the earth" just between nations, a regional war ? No. This war involves the whole earth, in which the symbolic rider on the "fiery-colored horse" is granted the authority "to take peace away from the earth so that they should slaughter one another" with "a great sword". Thence, an invisible war in heaven causes a visible war that encompasses the whole earth.
When in the history of mankind, for the first time, was the earth involved in a war that took away peace from the entire earth ? With the outbreak of World War I on July 28, 1914, when Austria-Hungary declared war on Serbia that very quickly escalated into a world war, so that by the end of this war, some 93 percent of the earth's population had become involved. Thus, began the "time of the end".
Hence, this is one of several features of the "sign of (Jesus) presence" (Matt 24:3) that Jesus spoke of at Matthew 24 and is the "beginning of pangs of distress" (Matt 24:7, 8) that began in 1914. Jesus paralleled his invisible "presence" or his becoming king of God's kingdom with "the days of Noah".(Matt 24:37)
He noted that most would be busy with the mundane affairs of life, marriage, eating and drinking, raising a family, but unwilling to take note that world conditions, both physical and moral, are changing.(Matt 24:38, 39) On the other hand, there would be a few who would be able to "mentally put the pieces together" and recognize that Jesus began ruling as king of God's Kingdom in 1914, the start of the "last days" of this "world".(Matt 24:27, 28)
For those who are cognizant of the time frame we are living in, he said: "Keep on the watch, therefore, because you you do not know on what day your Lord is coming."(Matt 24:42) We are now 100 years downstream of time since God's Kingdom became operational. So, we are rapidly reaching the end of this old "world" (or "system of things"). Collapse of morals on an unparalleled global scale is being seen. World war along with food shortages (due to war) and great earthquakes began the "pangs of distress", but the ride of the "four horsemen" are continuing until their ride ends with Armageddon in the near future.(Rev 6:2-8; 16:14, 16)