The instructions then given are again referred to in Luke's Gospel, and are there represented as principally directed to opening their minds 'that they might understand the Scriptures.' The main thing about the kingdom which they had then to learn, was that it was founded on the death of Christ, who had fulfilled all the Old Testament predictions. Much remained untaught, which after years were to bring to clear knowledge; but from the illumination shed during these fruitful days flowed the remarkable vigour and confidence of the Apostolic appeal to the prophets, in the first conflicts of the Church with the rulers. Christ is the King of the kingdom, and His Cross is His throne,--these truths being grasped revolutionised the Apostles' conceptions. They are as needful for us. From verse 4 onwards the last interview seems to be narrated. Probably it began in the city, and ended on the slopes of Olivet. There was a solemn summoning together of the Eleven, which is twice referred to (vs. 4, 6). What awe of expectancy would rest on the group as they gathered round Him, perhaps half suspecting that it was for the last time! His words would change the suspicion into certainty, for He proceeded to tell them what they were not to do and to do, when left alone. The tone of leave-taking is unmistakable. The prohibition against leaving Jerusalem implies that they would have done so if left to themselves; and it would have been small wonder if they had been eager to hurry back to quiet Galilee, their home, and to shake from their feet the dust of the city where their Lord had been slain. Truly they would feel like sheep in the midst of wolves when He had gone, and Pharisees and priests and Roman officers ringed them round. No wonder if, like a shepherdless flock, they had broken and scattered! But the theocratic importance of Jerusalem, and the fact that nowhere else could the Apostles secure such an audience for their witness, made their 'beginning at Jerusalem' necessary. So they were to crush their natural longing to get back to Galilee, and to stay in their dangerous position. We have all to ask, not where we should be most at ease, but where we shall be most efficient as witnesses for Christ, and to remember that very often the presence of adversaries makes the door 'great and effectual.' These eleven poor men were not left by their Master with a hard task and no help. He bade them 'wait' for the promised Holy Spirit, the coming of whom they had heard from Him when in the upper room He spoke to them of 'the Comforter.' They were too feeble to act alone, and silence and retirement were all that He enjoined till they had been plunged into the fiery baptism which should quicken, strengthen, and transform them.