Matthew 13:24-30 He put another parable before them, saying, "The kingdom of heaven may be compared to a man who sowed good seed in his field, 25 but while his men were sleeping, his enemy came and sowed weeds among the wheat and went away. 26 So when the plants came up and bore grain, then the weeds appeared also. 27 And the servants of the master of the house came and said to him, 'Master, did you not sow good seed in your field? How then does it have weeds?' 28 He said to them, 'An enemy has done this.' So the servants said to him, 'Then do you want us to go and gather them?' 29 But he said, 'No, lest in gathering the weeds you root up the wheat along with them. 30 Let both grow together until the harvest, and at harvest time I will tell the reapers, Gather the weeds first and bind them in bundles to be burned, but gather the wheat into my barn.'"
Matthew 13:36-43 Then he left the crowds and went into the house. And his disciples came to him, saying, "Explain to us the parable of the weeds of the field." 37 He answered, "The one who sows the good seed is the Son of Man. 38 The field is the world, and the good seed is the children of the kingdom. The weeds are the sons of the evil one, 39 and the enemy who sowed them is the devil. The harvest is the close of the age, and the reapers are angels. 40 Just as the weeds are gathered and burned with fire, so will it be at the close of the age. 41 The Son of Man will send his angels, and they will gather out of his kingdom all causes of sin and all law-breakers, 42 and throw them into the fiery furnace. In that place there will be weeping and gnashing of teeth. 43 Then the righteous will shine like the sun in the kingdom of their Father. He who has ears, let him hear.
You have read both passages of scripture. The second is Jesus teaching His disciples what the first means. Take a piece of paper and write down each individual part as Jesus explains verses 24-30 in verses 36-43. Example: the Son of Man is the sower of the good seed. The field is the world, etc.
Now look at your list. Are there different names for the same person or thing? Field equals world equals kingdom. Take note of the synonyms. Are there any you don't understand? My guess "close of the age is a bit foggy. Galatians describes the age as "the present evil age". This age begins in Genesis 3 when sin and death entered the world (Romans 5:12) and ends when sin and death are no longer in the world (Revelation 21:1-4). The close of the age is when God gives us the new heavens and earth.
What is the truth Jesus is communicating in this parable? Read verses 41-43 and Jesus makes clear the truth He is communicating. There is a time of judgment coming when people who are not pardoned from their sin will be cast into the Lake of Fire and experience eternal torment (Revelation 21:8; Matthew 25:46)
We now live in an age where evil thrives alongside righteousness. We need to help as many people as we can to repent and believe the gospel (Mark 1:15). We are sent into the world to do this. Romans 10:13-17 describes our greatest assignment - preach the good news to all in our sphere of influence, which is another way of saying to all those we are sent to. It is very important for us to be actively engaged in completing our assignment.