"While the disciples were still gazing upward, voices addressed them which sounded like richest music. They turned, and saw two angels in the form of men, who spoke to them, saying, “Ye men of Galilee, why stand ye gazing up into heaven? this same Jesus, which is taken up from you into heaven, shall so come in like manner as ye have seen Him go into heaven.” DA 831.1"
"Which also said, Ye men of Galilee, why stand ye gazing up into heaven? this same Jesus, which is taken up from you into heaven, shall so come in like manner as ye have seen him go into heaven."
The EGW passage directly quotes Acts 1:11.