The order in which promise and command occur here shows how graciously Jesus considered the Apostles' weakness. Not a word does He say of their task of witnessing, till He has filled their hearts with the promise of the Spirit. He shows them the armour of power in which they are to be clothed, before He points them to the battlefield. Waiting times are not wasted times. Over-eagerness to rush into work, especially into conspicuous and perilous work, is sure to end in defeat. Till we feel the power coming into us, we had better be still. The promise of this great gift, the nature of which they but dimly knew, set the Apostles' expectations on tiptoe, and they seem to have thought that their reception of it was in some way the herald of the establishment of the Messianic kingdom. So it was, but in a very different fashion from their dream. They had not learned so much from the forty days' instructions concerning the kingdom as to be free from their old Jewish notions, which colour their question, 'Wilt Thou at this time restore again the kingdom to Israel?' They believed that Jesus could establish His kingdom when He would. They were right, and also wrong,--right, for He is King; wrong, for its establishment is not to be effected by a single act of power, but by the slow process of preaching the gospel. Our Lord does not deal with their misconceptions which could only be cured by time and events; but He lays down great principles, which we need as much as the Eleven did. The 'times and seasons,' the long stretches of days, and the critical epoch-making moments, are known to God only; our business is, not to speculate curiously about these, but to do the plain duty which is incumbent on the Church at all times. The perpetual office of Christ's people to be His witnesses, their equipment for that function (namely, the power of the Holy Spirit coming on them), and the sphere of their work (namely, in ever-widening circles, Jerusalem, Samaria, and the whole world), are laid down, not for the first hearers only, but for all ages and for each individual, in these last words of the Lord as He stood on Olivet, ready to depart. The calm simplicity of the account of the Ascension is remarkable. So great an event told in such few, unimpassioned words! Luke's Gospel gives the further detail that it was in the act of blessing with uplifted hands that our Lord was parted from the Eleven. Two expressions are here used to describe the Ascension, one of which ('was taken up') implies that He was passive, the other of which ('He went') implies that He was active. Both are true. As in the accounts of the Resurrection He is sometimes said to have been raised, and sometimes to have risen, so here. The Father took the Son back to the glory, the Son left the world and went to the Father. No chariot of fire, no whirlwind, was needed to lift Him to the throne. Elijah was carried by such agency into a sphere new to him; Jesus ascended up where He was before.