At the end a series of parables, Jesus asked His disciples if they understood. They said they had, although it is difficult to know to what extent. The first time people learn anything, its freshness catches their attention, and with an explanation (the disciples always needed the Lord's interpretation of the parables) they have a new insight. However, when the teaching had to be used, the Holy Spirit would show the deep significance of what they had heard. That would happen after Jesus went back to heaven, the Spirit was given, and the apostles were left to lead the churches (John 14:2