Above it were the cherubim [Note: These were winged, angelic-like, golden figurines] spread out over the [Chest] covering, where sins were [symbolically] forgiven. But we cannot now speak of these things in detail.

Now the words, "once more" indicate the removing of what can be shaken --- that is, the created universe --- so that those things which cannot be shaken will remain. [Note: These "things" have been variously interpreted to be eternal truth, the heavenly kingdom, the new heavens and earth, etc.].

Therefore, we should be grateful for receiving a kingdom that cannot be shaken [i.e., the church. See Col. 1:13; Rev. 1:6, 9]. So, with reverence and awe, we should serve God in a way that pleases Him,

Remember [to pray for and help] those who are in prison, as though you [yourselves] were in prison with them. [Remember] those who are being mistreated, realizing that you [yourselves] also share [with them] a physical body [i.e., you are subject to the same kind of trials].