In the middle of writing about his sufferings for the church, Paul explained that the message he preached was a mystery hidden for generations and finally revealed in Christ.
This first parable from Matthew provides the key to understanding all the parables and to entering the kingdom of God.
Jesus announced that the hour had come for him to be glorified, but his glorification would begin with a cross.
As Jesus finally approached Jerusalem, he admonished the leaders and affirmed his mission.