Star Trek is a jewish show, thus their representation of "powerful" beings is just retarded and intended to mislead us (so they mix lies and some half truths as this is the jewish modus operandi). What does "omnipotent" mean? Can the jewish "god" create a stone it would be unable to lift? If so, then it would stop being omnipotent. If it can not do this, then he is not omnipotent in the first place. Of course, the jews would then take retarded interpretations, such as that this god is able to live at once in an infinite number of realities (a.k.a. parallel universes) which would be an even more retarded interpretation of reality.
Regarding power and abilities of the Gods, it is probably a mystery, and it is pretty hard to understand the real extent of their abilities. However, the jewish interpretation of divine power is just retarded, and gives us completely nothing regarding our own advancement spiritually and materially. In Spiritual Satanism, we have a different view on this. Maybe we do not know everything, but it gets revealed bit by bit to us based on our own effort to improve.
The more we improve, the more power we have, and the more we are able to see. For instance, we can compare ourselves with communists who believe in the xianized version of them being flesh and bones to illustrate the point of what power really looks like based on more advanced and less advanced observers. Their auras are so weak they are unable to do anything at all. But us who are more sophisticated literally can manipulate energy and destroy them (or heal them). Their auras are so weak and tiny that even those who have good senses in detecting auras are hardly able to see the auras of those weak people.
Still, being weak does not mean they are not affected as every individual exists in the reality that follows the same natural laws. They are affected in lots of ways. They might try to get into our company like ants tend to go to sugar. But they do not get easily to us if we do not want them in our company as we are more advanced. And energetically it is pretty easy to understand why this happens, but they will see it as some random accident (e.g., "the car broke down", "I've got sick", etc.)
So the difference is the following. We have a conscious understanding of how energy works, and why some things happen, and our understanding gets better and better. Other people who do not advance have no such understanding, and they see it as accidents.
Now let us get back to this Q character. What power did he really show in Star Trek? Nothing fancy. In our own reality, Satan and other Gods have shown much more power than this retarded Q character. Destroying something randomly is no demonstration of power at all. It is just a retarded demonstration of a person being unable to use the power properly. Real power balances both creation and destruction. And the more power you have, the more extremes in creation and destruction you are able to control in the correct way without destroying yourself or other people.
Finally, I would like to share the fragment of Star Trek: Voyager where actually they presented the real "power" that tries to destroy us:
. This illustrates pretty much how in reality the so-called "light at the end of the tunnel" works. And it also shows us they can not force anyone to go there.