What the Bible says are the signs of the end of the age
"As Jesus was sitting on the Mount of Olives, the disciples came to him privately. "Tell us," they said, "when will this happen, and what will be the sign of your coming and of the end of the age?... At that time many will turn away from the faith and will betray and hate each other... Because of the increase of wickedness, the love of most will grow cold, but the one who stands firm to the end will be saved...."
"For in the days before the flood, people were eating and drinking, marrying and giving in marriage, up to the day Noah entered the ark; and they knew nothing about what would happen until the flood came and took them all away. That is how it will be at the coming of the Son of Man...Therefore keep watch, because you do not know on what day your Lord will come. But understand this: If the owner of the house had known at what time of night the thief was coming, he would have kept watch and would not have let his house be broken into. So you also must be ready, because the Son of Man will come at an hour when you do not expect him." - Matthew 24: 3-44
"...in the last days there will be very difficult times. For people will love only themselves and their money. They will be boastful and proud, scoffing at God, disobedient to their parents, and ungrateful. They will consider nothing sacred.
They will be unloving and unforgiving; they will slander others and have no self-control. They will be cruel and hate what is good. They will betray their friends, be reckless, be puffed up with pride, and love pleasure rather than God.
They will act religious, but they will reject the power that could make them godly. Stay away from people like that! They are the kind who work their way into people’s homes and win the confidence of[a] vulnerable women who are burdened with the guilt of sin and controlled by various desires. (Such women are forever following new teachings, but they are never able to understand the truth.) These teachers oppose the truth just as Jannes and Jambres opposed Moses. They have depraved minds and a counterfeit faith. But they won’t get away with this for long. Someday everyone will recognize what fools they are, just as with Jannes and Jambres. ......
Yes, and everyone who wants to live a godly life in Christ Jesus will suffer persecution. But evil people and impostors will flourish. They will deceive others and will themselves be deceived. But you must remain faithful to the things you have been taught. You know they are true, for you know you can trust those who taught you. You have been taught the holy Scriptures from childhood, and they have given you the wisdom to receive the salvation that comes by trusting in Christ Jesus. All Scripture is inspired by God and is useful to teach us what is true and to make us realize what is wrong in our lives. It corrects us when we are wrong and teaches us to do what is right. God uses it to prepare and equip his people to do every good work." 2 Timothy 3: 1-17
“At that time many will turn away from the faith and will betray and hate each other, and many
false prophets will appear and deceive many people. Because of the increase of wickedness, the love of most will grow cold, but the one who stands firm to the end will be saved. And this gospel of the kingdom will be preached in the whole world as a testimony to all nations, and then the end will come…
For then there will be great distress, unequaled from the beginning of the world until now—and never to be equaled again. If those days had not been cut short, no one would survive, but for the sake of the elect those days will be shortened.
As it was in the days of Noah, so it will be at the coming of the Son of Man. For in the days before the flood, people were eating and drinking, marrying and giving in marriage, up to the day Noah entered the ark; and they knew nothing about what would happen until the flood came and took them all away. That is how it will be at the coming of the Son of Man. Two men will be in the field; one will be taken and the other left. Two women will be grinding with a hand mill; one will be taken and the other left.
Therefore keep watch, because you do not know on what day your Lord will come. But understand this: If the owner of the house had known at what time of night the thief was coming, he would have kept watch and would not have let his house be broken into. So you also must be ready, because the Son of Man will come at an hour when you do not expect him.
Who then is the faithful and wise servant, whom the master has put in charge of the servants in his household to give them their food at the proper time? It will be good for that servant whose master finds him doing so when he returns. Truly I tell you, he will put him in charge of all his possessions. But suppose that servant is wicked and says to himself, ‘My master is staying away a long time,’ and he then begins to beat his fellow servants and to eat and drink with drunkards. The master of that servant will come on a day when he does not expect him and at an hour he is not aware of.” –Matthew 24: 10-14, 21-22, 37-50
“At that time the kingdom of heaven will be like ten virgins who took their lamps and went out
to meet the bridegroom. Five of them were foolish and five were wise. The foolish ones took
their lamps but did not take any oil with them. The wise ones, however, took oil in jars along
with their lamps. The bridegroom was a long time in coming, and they all became drowsy and fell asleep. At midnight the cry rang out: ‘Here’s the bridegroom! Come out to meet him!’ “Then all the virgins woke up and trimmed their lamps.
The foolish ones said to the wise,‘Give us some of your oil; our lamps are going out.’ “‘No,’ they replied, ‘there may not be enough for both us and you. Instead, go to those who sell oil and buy some for yourselves.’ “But while they were on their way to buy the oil, the bridegroom arrived. The virgins who were ready went in with him to the wedding banquet. And the door was shut. “Later the others also came. ‘Lord, Lord,’ they said, ‘open the door for us!’ “But he replied, ‘Truly I tell you, I don’t know you.’ “Therefore keep watch, because you do not know the day or the hour.” – Matthew 25: 1-13
“When it is evening you say, ‘It will be fair weather, for the sky is red’; and in the morning, ‘It
will be foul weather today, for the sky is red and threatening.’ Hypocrites![a] You know how to
discern the face of the sky, but you cannot discern the signs of the times.” – Matthew 16:2-3
Be on guard! Be alert! You do not know when that time will come… Therefore keep watch
because you do not know when the owner of the house will come back—whether in the
evening, or at midnight, or when the rooster crows, or at dawn. If he comes suddenly, do not
let him find you sleeping. What I say to you, I say to everyone: ‘Watch!’” – Mark 13:33,35-37
The bible tells us, “Don't copy the behavior and customs of this world, but let God transform
you into a new person by changing the way you think. Then you will learn to know God's will
for you, which is good and pleasing and perfect.” – Romans 12:2
WATCHMEN WILL WARN THE PEOPLE
“Son of man, speak to the children of your people, and say to them: ‘When I bring the sword
upon a land, and the people of the land take a man from their territory and make him their
watchman, when he sees the sword coming upon the land, if he blows the trumpet and warns the people, then whoever hears the sound of the trumpet and does not take warning, if the sword comes and takes him away, his blood shall be on his own head.
He heard the sound of the trumpet, but did not take warning; his blood shall be upon himself. But he who takes warning will save his life. But if the watchman sees the sword coming and does not blow the trumpet, and the people are not warned, and the sword comes and takes any person from among them, he is taken away in his iniquity; but his blood I will require at the watchman’s hand.” – Ezekiel 33: 2-6
“Surely the Lord GOD does nothing, Unless He reveals His secret to His servants the
prophets.” – Amos 3:7
“My son, do not let wisdom and understanding out of your sight, preserve sound judgment
and discretion; they will be life for you, an ornament to grace your neck. Then you will go on
your way in safety, and your foot will not stumble. When you lie down, you will not be afraid;
when you lie down, your sleep will be sweet. Have no fear of sudden disaster or of the ruin
that overtakes the wicked, for the LORD will be at your side and will keep your foot from being snared.” – Proverbs 3: 21-26