Jesus’ discourse on the last times in Matthew 24-25 is tightly connected and parallel in construction. This has important theological and pastoral ramifications. Let me demonstrate.
Two mini parables end chapter 24: the parable about the thief and the master of the house, and the parable about the faithful and wise servant who is doing what his master commanded when the master returns. What follows in chapter 25 is three large sections, two of them definitely parables, and the last section possibly a parable, or perhaps an extended metaphor. The first parable of chapter 25 is the parable of the ten virgins (five were wise in being prepared, five were foolish in being completely unprepared). The second parable is of the talents, again having wise servants (with the 5 and the 2 talents) and the foolish servant (with the 1 talent). The chapter ends up with the separation of all people into sheep and goats. For our purposes here, I want to point out the parallel order: the ultimate once-for-all preparedness of faith in Christ precedes and grounds the subsidiary preparedness of obedience. Faith is the foundation for obedience. The master of the house who is wise in watching for the intruder is the faithful servant doing what his master commanded when the master comes back, who is in turn the wise virgin who prepared by bringing extra oil, who in turn is the faithful servant multiplying his talents, and is the sheep at the end. The (implied) foolish master of the house who did not watch is the foolish servant who beat his fellow servants, who is the foolish virgin caught without oil, who in turn is the foolish servant who hid the talent in the ground, and is the goat at the end. There are two parallel threads here marking out (ultimately) the sheep and the goats.
Even further, however, notice that in both chapter 24 and chapter 25 the ultimate preparedness comes before and grounds the subsidiary preparedness of obedience. You have to be the wise master of the house in order to be expecting the master’s return and behaving accordingly. Similarly, in the parallel chapter 25, you have to be the wise virgin in order to be the wise servant multiplying talents. Faith always leads to obedience. It is the source of obedience. The indicative grounds the imperative, as it does in all of Paul’s letters, and as it does in the Ten Commandments.
Going back a bit further into chapter 24, we notice that Jesus is setting up these two threads by talking about preparedness: some will expect Jesus to come back any day, while others will treat it the same way as those sinners in Noah’s day. Going back even further, Jesus gives us signs of the times, some of which signs apply to the destruction of Jerusalem, while others apply to the end of the world (see the programmatic question of the disciples in verse 3). It all hangs together: prepare for the Lord’s coming by believing in Christ, and obeying Christ, and obeying Christ because you believe in Him.