{4} And when he had spoken these things, while they beheld, he was taken up; and a cloud received him out of their sight.

(4) After Christ had promised the full power of the Holy Spirit, with whom he would govern his church (even though he would be absent in body), he took up his body from us into heavenly tabernacles to remain there until the latter day of judgment, as the angels witness.

People's New Testament

1:9 He was taken up. See PNT Lu 24:50.

Jamieson-Fausset-Brown Bible Commentary

9-11. while they beheld, he was taken up-See on [1932]Lu 24:50-53. Lest it should be thought He had disappeared when they were looking in some other direction, and so was only concluded to have gone up to heaven, it is here expressly said that "while they were looking He was taken up, and a cloud received Him out of their sight." So Elijah, "If thou see me when I am taken from thee" (2Ki 2:10); "And Elisha saw it" (Ac 1:12). (See on [1933]Lu 9:32.)

Matthew Henry's Concise Commentary

1:6-11 They were earnest in asking about that which their Master never had directed or encouraged them to seek. Our Lord knew that his ascension and the teaching of the Holy Spirit would soon end these expectations, and therefore only gave them a rebuke; but it is a caution to his church in all ages, to take heed of a desire of forbidden knowledge. He had given his disciples instructions for the discharge of their duty, both before his death and since his resurrection, and this knowledge is enough for a Christian. It is enough that He has engaged to give believers strength equal to their trials and services; that under the influence of the Holy Spirit they may, in one way or other, be witnesses for Christ on earth, while in heaven he manages their concerns with perfect wisdom, truth, and love. When we stand gazing and trifling, the thoughts of our Master's second coming should quicken and awaken us: when we stand gazing and trembling, they should comfort and encourage us. May our expectation of it be stedfast and joyful, giving diligence to be found of him blameless.