I am going to preface this with my understanding of scripture in that I am not pre-tribulation, no scholar, and new to this site. So my apologies if I am out of order.
In my study, I know there are various differences in the gospels such as the order of miracles, etc. That said I also understand that theology says that Matthew is for the Jews, Mark for the Romans, Luke for the Greeks, and John for the church. Personally, I don't believe this to be true in the aspect that the words and promises in the Bible are for everyone. However, outside of this theory that the gospels have a target audience, I cannot understand why the other disciples chose to leave that part out. Matthew 13:36-43 is the particular scripture I'm referring to which I'm certain those in this community are already aware of what verses I'm speaking about.
Matthew 13:36-43 KJV
36 Then Jesus sent the multitude away, and went into the house: and his disciples came unto him, saying, Declare unto us the parable of the tares of the field. 37 He answered and said unto them, He that soweth the good seed is the Son of man; 38 The field is the world; the good seed are the children of the kingdom; but the tares are the children of the wicked one; 39 The enemy that sowed them is the devil; the harvest is the end of the world; and the reapers are the angels. 40 As therefore the tares are gathered and burned in the fire; so shall it be in the end of this world. 41 The Son of man shall send forth his angels, and they shall gather out of his kingdom all things that offend, and them which do iniquity; 42 And shall cast them into a furnace of fire: there shall be wailing and gnashing of teeth. 43 Then shall the righteous shine forth as the sun in the kingdom of their Father. Who hath ears to hear, let him hear.