The Faithful & Wise Servant

As we have been studying the second coming of Christ, our Lord is stressing the point that he is coming. So we need to be ready, be prepared, be watchful, and alert. He is coming. In this last few verses of Matthew our Lord gives another parable to stress his coming and when he comes he will be looking for the wise and faithful servant. What does it mean to be wise and faithful and how does this relate to his second coming?