|Mark 13:3 And as he sat upon the mount of Olives over against the temple, Peter and James and John and Andrew asked him privately, 4 Tell us, when shall these things be? and what shall be the sign when all these things shall be fulfilled?||Matt 24:3 And as he sat upon the mount of Olives, the disciples came unto him privately, saying, Tell us, when shall these things be? and what shall be the sign of thy coming, and of the end of the world?||Luke 21:7 And they  asked him, saying, Master, but when shall these things be? and what sign will there be when these things shall come to pass?|
|Mark 13:5 And Jesus answering them began to say, Take heed lest any man deceive you: 6 For many shall come in my name, saying, I am Christ; and shall deceive many .||Matt 24:4 And Jesus answered and said unto them, Take heed that no man deceive you. 5 For many shall come in my name, saying, I am Christ; and shall deceive many.||Luke 21:8 And he said, Take heed that ye be not deceived: for many shall come in my name, saying, I am Christ; and the time draweth near: go ye not therefore after them.|
|Mark 13:7 And when ye shall hear of wars and rumours of wars, be ye not troubled: for such things must needs be; but the end shall not be yet.||Matt 24:6 And ye shall hear of wars and rumours of wars:see that ye be not troubled: for all these things must come to pass, but the end is not yet.||Luke 21:9 But when ye shall hear of wars and commotions, be not terrified: for these things must first come to pass; but the end is not by and by.|
|Mark 13:8 For nation shall rise against nation, and kingdom against kingdom: and there shall be earthquakes in divers places, and there shall be famines and troubles: these are the beginnings of sorrows.||Matt 24:7 For nation shall rise against nation, and kingdom against kingdom: and there shall be famines, and pestilences, and earthquakes, in divers places. 8 All these are the beginning of sorrows.||Luke 21:10 Then said he unto them, Nation shall rise against nation, and kingdom against kingdom: 11 And great earthquakes shall be in divers places, and famines, and pestilences; and fearful sights and great signs shall there be from heaven.|
|Mark 13:9 But take heed to yourselves: for they shall deliver you up to councils; and in the synagogues ye shall be beaten: and ye shall be brought before rulers and kings for my sake, for a testimony against them.||Matt 24:9a Then shall they deliver you up to be afflicted, and shall kill you:||Luke 21:12 But before all these, they shall lay their hands on you, and persecute you, delivering you up to the synagogues, and into prisons, being brought before kings and rulers for my name's sake. 13 And it shall turn to you for a testimony.|
Matt 24:10 And then shall many be offended, and shall betray one another, and shall hate one another. 11 And many false prophets shall rise, and shall deceive many. 12 And because iniquity shall abound, the love of many shall wax cold.
|Mark 13:10 And the gospel must first be published among all nations.||Matt 24:14 And this gospel of the kingdom shall be preached in all the world for a witness unto all nations; and then shall the end come.|
|Mark 13:11 But when they shall lead you, and deliver you up, take no thought beforehand what ye shall speak, neither do ye premeditate: but whatsoever shall be given you in that hour, that speak ye: for it is not ye that speak, but the Holy Ghost.||Luke 21:14 Settle it therefore in your hearts, not to meditate before what ye shall answer: 15 For I will give you a mouth and wisdom, which all your adversaries shall not be able to gainsay nor resist.|
|Mark 13:12 Now the brother shall betray the brother to death, and the father the son; and children shall rise up against their parents, and shall cause them to be put to death.||Luke 21:16 And ye shall be betrayed both by parents, and brethren, and kinsfolks, and friends; and some of you shall they cause to be put to death  .|
|Mark 13:13a And ye shall be hated of all men for my name's sake:||Matt 24:9b and ye shall be hated of all nations for my name's sake.||Luke 21:17 And ye shall be hated of all men for my name's sake.|
|Mark 13:13b but he that shall endure unto the end, the same shall be saved.||Matt 24:13 But he that shall endure unto the end, the same shall be saved.||Luke 21:18 But there shall not an hair of your head perish. 19 In your patience possess ye your souls.|
By "they" Luke means "all the people" (Luke 20:45).
Compare this with Mark 13:21-23.
This is contradicted by Luke 21:18.