The acts of Jesus are the miracles and doings which showed his Godhead, and his most perfect holiness and example of his doctrine. A passing over from the history of the Gospel, that is, from the history of the sayings and doings of Christ, unto the acts of the Apostles.
1. His patron, to whom he dedicates this book (I should rather say his pupil, for he designs, in dedicating it to him, to instruct and direct him, and not to crave his countenance or protection), is Theophilus, v. 1. In the epistle dedicatory before his gospel, he had called him most excellent Theophilus; here he calls him no more than O Theophilus; not that he had lost his excellency, nor that it was diminished and become less illustrious; but perhaps he had now quitted his place, whatever it was, for the sake of which that title was given him,—or he was now grown into years, and despised such titles of respect more than he had done,—or Luke was grown more intimate with him, and therefore could address him with the more freedom. It was usual with the ancients, both Christian and heathen writers, thus to inscribe their writings to some particular persons. But the directing some of the books of the scripture so is an intimation to each of us to receive them as if directed to us in particular, to us by name; for whatsoever things were written aforetime were written for our learning.
Verses 1-5 Our Lord told the disciples the work they were to do. The apostles met together at Jerusalem; Christ having ordered them not to depart thence, but to wait for the pouring out of the Holy Spirit. This would be a baptism by the Holy Ghost, giving them power to work miracles, and enlightening and sanctifying their souls. This confirms the Divine promise, and encourages us to depend upon it, that we have heard it from Christ; for in Him all the promises of God are yea and amen.
4. The period of the evangelical story is fixed to the day in which he was taken up, v. 2. Then it was that he left this world, and his bodily presence was no more in it. St. Mark's gospel concludes with the Lord's being received up into heaven (Mark 16 19), and so does St. Luke's, Luke 24 51. Christ continued doing and teaching to the last, till he was taken up to the other work he had to do within the veil.
Until the day on which, giving commandments by the Holy Ghost to the apostles whom he had chosen, he was taken up. As the Scripture was written without distinction of verses, and without any stops, or commas, which were added afterwards) the construction, and joining of the words in this verse, is ambiguous. The question is, with what part of the verse these words, by the Holy Ghost, are to be joined. The sense might be, 1. that he was taken up by the Holy Ghost: but this is generally rejected. 2. That he gave his commandments by the Holy Ghost to his apostles; that is, says St. Chrysostom, that he gave them spiritual commands, that came from the Holy Ghost, or from his holy Spirit. 3. The most probable exposition seems to be, that he gave his special commandments to his apostles, or to those whom he chose to be his apostles, by the Holy Ghost, or by his holy and divine spirit. (Witham) — The power to preach, to baptize, to remit sins, and generally the whole commission and charge of the government of his Church after him in his name, and with his authority; which government was given them, together with the Holy Ghost, to assist them therein for ever. (Bristow)
Proofs of Christ's resurrection. (1-5) Christ's ascension. (6-11) The apostles unite in prayer. (12-14) Matthias chosen in the place of Judas. (15-26)
Appearing, &c. Why did he not appear to all, but only to his disciples? Because to many of them, who did not know the mystery, he would have seemed a phantom. For if the disciples themselves were diffident, and terrified, and required to touch him with their hands, how would others have been affected? But we know from their miracles, the truth of the resurrection, which is made evident to all succeeding generations. Perhaps the apostles did not perform miracles. How then was the world converted? This is a fact which cannot be denied, and that it should have been brought about by twelve poor illiterate fishermen, without miracles, would be the greatest of all miracles, far beyond the reach of all human means. (St. Chrysostom, hom. i. chap. 1. on Acts.) — “And speaking of things pertaining to the kingdom of God,” as we read in the Greek, and in the Protestant version, that is, pertaining to the Church, which is the kingdom of God, ta peri tes basileias tou theou, which plainly makes for unwritten tradition. (Estius)
II. The truth of Christ's resurrection is maintained and evidenced, v. 3. That part of what was related in the former treatise was so material that it was necessary to be upon all occasions repeated. The great evidence of his resurrection was that he showed himself alive to his apostles; being alive, he showed himself so, and he was seen of them. They were honest men, and one may depend upon their testimony; but the question is whether they were not imposed upon, as many a well-meaning man is. No, they were not; for, 1. The proofs were infallible, tekmeria—plain indications, both that he was alive (he walked and talked with them, he ate and drank with them) and that it was he himself, and not another; for he showed them again and again the marks of the wounds in his hands, and feet, and side, which was the utmost proof the thing was capable of or required. 2. They were many, and often repeated: He was seen by them forty days, not constantly residing with them, but frequently appearing to them, and bringing them by degrees to be fully satisfied concerning it, so that all their sorrow for his departure was done away by it. Christ's staying upon earth so long after he had entered upon his state of exaltation and glory, to confirm the faith of his disciples and comfort their hearts, was such an instance of condescension and compassion to believers as may fully assure us that we have a high priest that is touched with the feeling of our infirmities.