Ye men of Galilee, why stand ye gazing up into heaven? – Acts 1:11

Methinks, if Jesus were among us now we would fix our eyes upon Him, and never withdraw them. He is altogether lovely, and it would seem wicked to yield our eyesight to any inferior object so long as He was to be seen. When He ascended up into heaven it was the duty of His friends to look upon Him. It can never be wrong to look up; we are often bidden to do so, and it is even a holy saying of the Psalmist, “I will direct my prayer unto Thee, and will look up”; and, again, “I will lift up mine eyes unto the hills, from whence cometh my help.” If it be right to look up into heaven, it must be still more right to look up while Jesus rises to the place of His glory. Surely it had been wrong if they had looked anywhere else; it was due to the Lamb of God that they should behold Him as long as eyes could follow Him. He is the Sun: where should eyes be turned but to His light? He is the King; and where should courtiers within the palace gate turn their eyes but to their King as He ascends to His throne? The truth is, there was nothing wrong in their looking up into heaven; but they went a little further than looking; they stood “gazing.” A little excess in right may be faulty. It may be wise to look, but foolish to gaze. There is a very thin partition sometimes between that which is commendable and that which is censurable…When the person of Jesus was gone out of the azure vault above them, and the cloud had effectually concealed Him, why should they continue to gaze when God Himself had drawn the curtain? If infinite wisdom had withdrawn the object upon which they desired to gaze, what would their gazing be but a sort of reflection upon the wisdom which had removed their Lord? …A steadfast gaze into heaven may be to a devout soul a high order of worship, but if this filled up much of our working time it might become the idlest form of folly. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/1817.cfm