There are many passages that give insight in knowing when it is near, but Mat 24 is the best overview IMO;
[FONT=Times New Roman, serif]Mat 24:1-51, [/FONT]
[FONT=Times New Roman, serif]"24:1, "And going out, [/FONT][FONT=Times New Roman, serif]יהושע [/FONT][FONT=Times New Roman, serif]went away from the Set-apart Place, and His taught ones came near to point out to Him the buildings of the Set-apart Place."[/FONT]
[FONT=Times New Roman, serif]24:2, "And [/FONT][FONT=Times New Roman, serif]יהושע [/FONT][FONT=Times New Roman, serif]said to them, “Do you not see all these? Truly, I say to you, not one stone shall be left here upon another, at all, which shall not be thrown down.”"[/FONT]
[FONT=Times New Roman, serif]24:3, "And as He sat on the Mount of Olives, the taught ones came to Him separately, saying, “Say to us, when shall this be, and what is the sign of Your coming, and of the end of the age?”"[/FONT]
[FONT=Times New Roman, serif]24:4, "And [/FONT][FONT=Times New Roman, serif]יהושע [/FONT][FONT=Times New Roman, serif]answering, said to them, “Take heed that no one leads you astray."[/FONT]
[FONT=Times New Roman, serif]24:5, "“For many shall come in My Name, saying, ‘I am the Messiah,’ and they shall lead many astray."[/FONT]
[FONT=Times New Roman, serif]24:6, "“And you shall begin to hear of fightings and reports of fightings. See that you are not troubled, for these have to take place, but the end is not yet."[/FONT]
[FONT=Times New Roman, serif]24:7, "“For nation shall rise against nation, and reign against reign. And there shall be scarcities of food, and deadly diseases, and earthquakes in places."[/FONT]
[FONT=Times New Roman, serif]24:8, "“And all these are the beginning of birth pains."[/FONT]
[FONT=Times New Roman, serif]24:9, "“Then they shall deliver you up to affliction and kill you, and you shall be hated by all nations for My Name’s sake."[/FONT]
[FONT=Times New Roman, serif]24:10, "“And then many shall stumble, and they shall deliver up one another, and shall hate one another."[/FONT]
[FONT=Times New Roman, serif]24:11, "“And many false prophets shall rise up and lead many astray."[/FONT]
[FONT=Times New Roman, serif]24:12, "“And because of the increase in lawlessness, the love of many shall become cold."[/FONT]
[FONT=Times New Roman, serif]24:13, "“But he who shall have endured to the end shall be saved.(Mat 10:22.)"[/FONT]
[FONT=Times New Roman, serif]24:14, "“And this Good News of the reign shall be proclaimed in all the world as a witness to all the nations, and then the end shall come."[/FONT]
[FONT=Times New Roman, serif]24:15, "“So when you see the ’abomination that lays waste,’(Dan 11:31) spoken of by Dani’ĕl the prophet, set up in the set-apart place” – he who reads, let him understand – (Dan 9:27) and Abomination that lays waste in"[/FONT]
[FONT=Times New Roman, serif]24:16, "“then let those who are in Yehuḏah flee to the mountains."[/FONT]
[FONT=Times New Roman, serif]24:17, "“Let him who is on the house-top not come down to take whatever out of his house."[/FONT]
[FONT=Times New Roman, serif]24:18, "“And let him who is in the field not turn back to get his garments."[/FONT]
[FONT=Times New Roman, serif]24:19, "“And woe to those who are pregnant and to those who are nursing children in those days!"[/FONT]
[FONT=Times New Roman, serif]24:20, "“And pray that your flight does not take place in winter or on the Sabbath."[/FONT]
[FONT=Times New Roman, serif]24:21, "“For then there shall be great distress,c such as has not been since the beginning of the world until this time, no, nor ever shall be. Footnote: cOr great pressure, or great affliction."[/FONT]
[FONT=Times New Roman, serif]24:22, "“And if those days were not shortened, no flesh would be saved, but for the sake of the chosen ones those days shall be shortened."[/FONT]
[FONT=Times New Roman, serif]24:23, "“If anyone then says to you, ‘Look, here is the Messiah!’ or ‘There!’ do not believe."[/FONT]
[FONT=Times New Roman, serif]24:24, "“For false messiahs and false prophets shall arise, and they shall show great signs and wonders, so as to lead astray, if possible, even the chosen ones."[/FONT]
[FONT=Times New Roman, serif]24:25, "“See, I have forewarned you."[/FONT]
[FONT=Times New Roman, serif]24:26, "“So if they say to you, ‘Look, He is in the desert!’ do not go out; or ‘Look, He is in the inner rooms!’ do not believe."[/FONT]
[FONT=Times New Roman, serif]24:27, "“For as the lightning comes from the east and shines to the west, so also shall the coming of the Son of Aḏam be."[/FONT]
[FONT=Times New Roman, serif]24:28, "“For wherever the dead body is, there the vulturesd shall be gathered together. (Luk 17:37)[/FONT]
[FONT=Times New Roman, serif]24:29, "“And immediately after the distresse of those days the sun shall be darkened, and the moon shall not give its light, and the stars shall fall from the heaven, (Isa 13:10; Isa 24:23, Eze 32:7-8, Joe 2:10, Joe 2:31, Joe 3:15 and the powers of the heavens shall be shaken.g Hag 2:6, Hag 2:21, Amo 5:20, Amo 8:9. gAlso see Isa 34:4)[/FONT]
[FONT=Times New Roman, serif]24:30, "“And then the sign of the Son of Aḏam shall appear in the heaven, and then all the tribes of the earth shall mourn, (Zec 12:10, Zec 12:14) and they shall see the Son of Aḏam coming on the clouds (Dan 7:13) of the heaven with power and much esteem. (Dan 7:14)[/FONT]
[FONT=Times New Roman, serif]24:31, "“And He shall send His messengers with a great sound of a trumpet [/FONT][FONT=Times New Roman, serif]([/FONT]1 Cor 15:51-55 [FONT=Times New Roman, serif])[/FONT][FONT=Times New Roman, serif], [/FONT][FONT=Times New Roman, serif]([/FONT][FONT=Times New Roman, serif]Isa 27:13[/FONT][FONT=Times New Roman, serif])[/FONT][FONT=Times New Roman, serif] and they shall gather together His chosen ones from the four winds, [/FONT][FONT=Times New Roman, serif]([/FONT][FONT=Times New Roman, serif]Dan 7:2[/FONT][FONT=Times New Roman, serif])[/FONT][FONT=Times New Roman, serif] from one end of the heavens to the other. [/FONT][FONT=Times New Roman, serif]([/FONT][FONT=Times New Roman, serif]Deu 4:32[/FONT][FONT=Times New Roman, serif])[/FONT]
[FONT=Times New Roman, serif]24:32, "“And learn this parable from the fig tree: When its branch has already become tender and puts forth leaves, you know that the summer is near."[/FONT]
[FONT=Times New Roman, serif]24:33, "“So you also, when you see all these, know that He is near, at the doors."[/FONT]
[FONT=Times New Roman, serif]24:34, "“Truly, I say to you, this generation shall by no means pass away until all this takes place."[/FONT]
[FONT=Times New Roman, serif]24:35, "“The heaven and the earth shall pass away, but My words shall by no means pass away."[/FONT]
[FONT=Times New Roman, serif]24:36, "“But concerning that day and the hour no one knows, not even the messengers of the heavens, but My Father only. (Mar 13:32)[/FONT]
[FONT=Times New Roman, serif]24:37, "“And as the days of Noaḥ, so also shall the coming of the Son of Aḏam be."[/FONT]
[FONT=Times New Roman, serif]24:38, "“For as they were in the days before the flood, eating and drinking, marrying and giving in marriage, until the day that Noaḥ entered into the ark, (Gen 7:7)[/FONT]
[FONT=Times New Roman, serif]24:39, "and they did not know until the flood came and took them all away, so also shall the coming of the Son of Aḏam be."[/FONT]
[FONT=Times New Roman, serif]24:40, "“Then twoi shall be in the field, the one is taken and the one is left.”[/FONT]
[FONT=Times New Roman, serif]24:41, "“Two womeni shall be grinding at the mill, one is taken and one is left.”[/FONT]
[FONT=Times New Roman, serif]24:42, "“Watch therefore, for you do not know what hour your Master is coming."[/FONT]
[FONT=Times New Roman, serif]24:43, "“And know this, that if the master of the house had known what hour the thief would come, he would have watched and not allowed his house to be broken into."[/FONT]
[FONT=Times New Roman, serif]24:44, "“Because of this, be ready too, for the Son of Aḏam is coming at an hour when you do not expect Him."[/FONT]
[FONT=Times New Roman, serif]24:45, "“Who then is a trustworthy and wise servant, whom his master set over his household, to give them food in season?"[/FONT]
[FONT=Times New Roman, serif]24:46, "“Blessed is that servant whom his master, having come, shall find so doing."[/FONT]
[FONT=Times New Roman, serif]24:47, "“Truly, I say to you that he shall set him over all his possessions."[/FONT]
[FONT=Times New Roman, serif]24:48, "“But if that evil servant says in his heart, ‘My master is delaying his coming,’"[/FONT]
[FONT=Times New Roman, serif]24:49, "and begins to beat his fellow servants, and to eat and drink with the drunkards,"[/FONT]
[FONT=Times New Roman, serif]24:50, "the master of that servant shall come on a day when he does not expect it, and at an hour he does not know,"[/FONT]
[FONT=Times New Roman, serif]24:51, "and shall cut him in two and appoint him his portion with the hypocrites – there shall be weeping and gnashing of teeth."[/FONT]